Jump to Recipe Print RecipeThe last bite I savored of this Keto Broccoli and Cauliflower Au Gratin with Sausage had me convinced—comfort food can be both indulgent and guilt-free! This dish is a creamy, cheesy delight that effortlessly blends the rich flavors of smoked sausage with crunchy vegetables, making it a true family favorite. Not only is it low-carb and gluten-free, perfect for meal prep, but it’s also an ideal way to bring everyone together around the dinner table. Whether you’re busy on a weeknight or planning a cozy weekend feast, this gratin turns simple ingredients into a gourmet experience that will leave everyone asking for seconds. So, are you ready to elevate your cooking with this amazing recipe? Let’s dive in! Why is this gratin a game changer? Creamy Indulgence: What sets this Keto Broccoli and Cauliflower Au Gratin with Sausage apart is its rich, creamy texture and decadent cheese sauce, making it utterly comforting without the guilt. Savory Goodness: The addition of smoky sausage provides a depth of flavor that elevates the dish, ensuring every bite is packed with satisfaction. Quick & Easy: Perfect for busy evenings, this recipe is simple enough for novice cooks and a breeze to prepare, turning your kitchen into a hub of delightful aromas. Versatile Delight: You can easily customize it—swap in turkey sausage for a leaner option or switch out veggies to suit your family’s preferences. Meal Prep Friendly: Great for leftovers, this gratin can be reheated throughout the week, ensuring you always have a nourishing meal ready to go. Family Friendly: It’s a guaranteed crowd-pleaser, perfect for satisfying cravings while sticking to keto goals, making it a meal everyone will love! Keto Broccoli and Cauliflower Au Gratin Ingredients For the Gratin • Cauliflower Florets – Adds a hearty base; consider using pre-chopped for convenience. • Broccoli Florets – Lightly steamed for tenderness and flavor depth; fresh is best! • Sliced Smoked Sausage – Provides protein and savory heartiness; feel free to substitute turkey or chicken sausage for a leaner option. For the Cheese Sauce • Butter – Used for sautéing onions; olive oil or ghee can be good alternatives. • Diced Onion – Adds sweetness and flavor; yellow or white onions work best for this dish. • Minced Garlic – Enhances aroma and taste; opt for fresh, but jarred can be used in a pinch. • Cream Cheese – Forms the creamy base of the sauce; try low-fat varieties for a lighter option. • Heavy Whipping Cream – Thickens the sauce beautifully; coconut cream can substitute for a dairy-free version. • Shredded Cheddar Cheese – The main cheese flavor source; blend with mozzarella or pepper jack for a unique twist. Each ingredient in this Keto Broccoli and Cauliflower Au Gratin with Sausage plays a key role in creating that mouthwatering, comforting dish your family will adore! Step‑by‑Step Instructions for Keto Broccoli and Cauliflower Au Gratin With Sausage Step 1: Preheat the Oven Start by preheating your oven to 350°F (175°C). This ensures that the heat is evenly distributed while you prepare the dish, so your Keto Broccoli and Cauliflower Au Gratin with Sausage bakes perfectly! Meanwhile, gather your ingredients and prep your baking dish by lightly greasing it to prevent sticking. Step 2: Cook Sausage In a large skillet, place your sliced smoked sausage over medium-high heat. Let it sear for about 5-7 minutes, stirring occasionally, until it’s beautifully browned and edges are crispy. The aroma will fill your kitchen, enticing everyone nearby, as the sausage releases its savory flavors and sets the stage for the gratin. Step 3: Prepare Cheese Sauce In a medium pot, melt 2 tablespoons of butter over medium heat, allowing it to warm gently. Add the diced onion and sauté for 3-4 minutes until it’s translucent, then stir in minced garlic, cooking for an additional minute until fragrant. Slowly add softened cream cheese, whisking until melted, then pour in heavy whipping cream and stir until thickened, about 3-5 minutes. Finally, mix in the shredded cheddar cheese until smoothly melted for your luscious cheese sauce. Step 4: Combine Ingredients In a large mixing bowl, combine the lightly steamed cauliflower and broccoli florets with the browned sausage. Pour the creamy cheese sauce over these ingredients and mix thoroughly, ensuring everything is coated in that gorgeous sauce. The vibrant colors of the veggies and the rich cheese will have you eager to bake this dish! Step 5: Bake the Gratin Transfer the combined mixture into your greased 9×9 baking dish. Spread it out evenly and place it in the preheated oven. Bake for 15-20 minutes, or until the top is bubbly and golden brown, creating that appetizing, crispy layer. The aromas wafting from the oven will surely convince everyone that dinner is underway. What to Serve with Keto Broccoli and Cauliflower Au Gratin with Sausage The perfect meal is all about balance, and adding complementary flavors to your cheesy gratin will create a delightful dining experience. Garlic Bread: The crispy, buttery goodness of garlic bread makes for an irresistible contrast to the creamy gratin, perfect for scooping up every last bite. Side Salad: A fresh garden salad with a zesty vinaigrette adds a vibrant crunch, complementing the rich cheese sauce and balancing your plate beautifully. Roasted Brussels Sprouts: Tender, caramelized Brussels sprouts bring a lovely depth of flavor with their slight bitterness, harmonizing perfectly with the smoky sausage. Classic Caesar Salad: The creamy dressing and crunchy croutons in a Caesar salad provide a wonderful balance to the cheesy richness of the au gratin, making for a satisfying combination. Steamed Asparagus: Lightly steamed asparagus offers a fresh, crisp texture that contrasts nicely with the dish, while also adding a pop of color to your dining table. Sparkling Water: Enhance your meal with refreshing sparkling water infused with lemon or cucumber, cleansing your palate between bites and making it feel even more special. Dessert Option: Finish up your meal with a light lemon sorbet. Its tangy sweetness acts as a perfect palate cleanser after the hearty gratin, leaving everyone feeling refreshed. These accompaniments will not only elevate your Keto Broccoli and Cauliflower Au Gratin with Sausage but also bring joy to your dinner table! Make Ahead Options These Keto Broccoli and Cauliflower Au Gratin with Sausage are perfect for meal prep enthusiasts looking to save time during busy nights! You can prepare the cheese sauce up to 24 hours in advance; simply store it in an airtight container in the refrigerator to keep its creamy texture intact. Additionally, you can chop the cauliflower and broccoli florets ahead of time and refrigerate them for up to 3 days. When you’re ready to cook, combine the ingredients and bake as directed. This way, you can serve a delicious, comforting dish with minimal effort, ensuring your family enjoys delightful homemade food any night of the week! Keto Broccoli and Cauliflower Au Gratin Variations Feel free to explore delightful twists on this recipe and make it your own! Vegetarian Delight: Omit the sausage to create a meat-free version. Add complementary veggies like roasted bell peppers or spinach for extra flavor and texture. Cheese Lovers: Swap in gouda or asiago cheese for a unique taste. Each cheese will bring its own distinct profile, enhancing the creaminess of your gratin. Herb Infusion: Add fresh herbs like thyme or rosemary to elevate the flavor. Just a sprinkle can transform your dish into a fragrant masterpiece! Spicy Kick: If you like heat, incorporate diced jalapeños or a pinch of red pepper flakes for a zesty twist. It adds an exciting layer to the traditional flavors. Nutty Crunch: Top your gratin with crushed almonds or pecans before baking for a satisfying crunch and nutty flavor contrast to the creamy base. Lower Fat Options: Substitute heavy cream with coconut cream for a lighter, dairy-free version. It keeps the dish creamy while catering to specific dietary needs. Meal Prep Magic: Make a double batch and freeze one for a rainy day. When you’re crunched for time, simply pop it in the oven for a quick dinner solution. Hearty Additions: Mix in cooked quinoa or lentils for added protein and a heartier dish. It’s a great way to bulk up the gratin while still keeping it low-carb. As you explore these variations, remember that cooking is all about creativity and personal preference! For other flavorful ideas, be sure to check out my cheesy root vegetable gratin or a comforting bowl of roasted cauliflower soup. Happy cooking! How to Store and Freeze Keto Broccoli and Cauliflower Au Gratin Fridge: Store leftovers in an airtight container for up to 3 days to maintain freshness and flavor. Freezer: If you need to keep it longer, this Keto Broccoli and Cauliflower Au Gratin with Sausage can be frozen for up to 2 months. Wrap tightly in plastic wrap and then foil. Reheating: To reheat, allow the gratin to defrost in the fridge overnight, then warm in the oven at 350°F (175°C) for about 20 minutes or until heated through. Enjoy it as a comforting meal any day of the week! Expert Tips for Keto Broccoli and Cauliflower Au Gratin Cream Sauce Consistency: If your cheese sauce turns out too thick, simply whisk in a little more heavy cream until you reach the desired creaminess. Vegetarian Option: For a vegetarian version of the Keto Broccoli and Cauliflower Au Gratin with Sausage, omit the sausage entirely and replace it with flavorful veggies like spinach or bell peppers. Cooking the Sausage: Ensure the smoked sausage is browned properly; this enhances the flavor and prevents it from being chewy. Prep Ahead: To save time during busy weeknights, you can prep the gratin a day in advance and bake it just before dinner. Don’t Rush Baking: Allow the gratin to bake fully until the top is golden brown and bubbling, as this adds a delicious texture that makes all the difference. Keto Broccoli and Cauliflower Au Gratin with Sausage Recipe FAQs What kind of cauliflower should I use? Absolutely! I recommend using fresh cauliflower florets for the best flavor and texture. If you’re short on time, pre-chopped cauliflower can save you some hassle. Just make sure to check for any dark spots or blemishes before purchasing. How should I store leftovers? Very! To keep your Keto Broccoli and Cauliflower Au Gratin with Sausage fresh, store leftovers in an airtight container in the refrigerator for up to 3 days. Allow the dish to cool completely before sealing to prevent moisture buildup. Can I freeze this gratin? Yes, you can! To freeze your Keto Broccoli and Cauliflower Au Gratin with Sausage, first allow it to cool completely. Wrap it tightly in plastic wrap, followed by a layer of aluminum foil to prevent freezer burn. This way, it can keep for up to 2 months. When you’re ready to enjoy it again, just defrost overnight in the fridge before reheating. What should I do if the cheese sauce is too thick? If you find your sauce is thicker than desired, don’t worry! Just whisk in a little more heavy cream, a tablespoon at a time, until you reach the desired consistency. This will ensure your sauce remains creamy and delicious. Are there any dietary considerations for this recipe? Absolutely! This recipe is gluten-free and keto-friendly, making it suitable for those following a low-carb diet. However, if you have dairy allergies, you can substitute cream cheese and heavy whipping cream with dairy-free alternatives like coconut cream. And for the sausage, feel free to use a vegetarian alternative or omit it for a delicious meatless option! How can I modify this recipe for different tastes? Very! You can easily make this gratin your own by swapping out the smoked sausage for turkey or chicken sausage for a leaner dish. Additionally, experiment with different cheeses—try mixing in gouda or asiago for unique flavors. Adding spices like paprika or nutmeg can also enhance the dish’s profile. Keto Broccoli and Cauliflower Au Gratin With Sausage Bliss This Keto Broccoli and Cauliflower Au Gratin with Sausage is a creamy, indulgent, and guilt-free comfort food that the whole family will love. Print Recipe Pin Recipe Prep Time 10 minutes minsCook Time 30 minutes minsTotal Time 40 minutes mins Servings: 6 servingsCourse: DinnerCuisine: KetoCalories: 350 Ingredients Equipment Method Nutrition Notes Ingredients 1x2x3x? For the Gratin4 cups Cauliflower Florets Consider using pre-chopped for convenience.4 cups Broccoli Florets Lightly steamed for tenderness and flavor depth; fresh is best!12 oz Sliced Smoked Sausage Feel free to substitute turkey or chicken sausage for a leaner option.For the Cheese Sauce2 tbsp Butter Used for sautéing onions; olive oil or ghee can be good alternatives.1 cup Diced Onion Adds sweetness and flavor; yellow or white onions work best for this dish.2 cloves Minced Garlic Opt for fresh, but jarred can be used in a pinch.8 oz Cream Cheese Try low-fat varieties for a lighter option.1 cup Heavy Whipping Cream Coconut cream can substitute for a dairy-free version.2 cups Shredded Cheddar Cheese Blend with mozzarella or pepper jack for a unique twist. Equipment Large SkilletMedium potBaking dishMixing Bowlwhisk Method StepsPreheat your oven to 350°F (175°C) and prepare your baking dish by lightly greasing it.Cook sliced smoked sausage in a skillet over medium-high heat for 5-7 minutes until browned.In a pot, melt butter, sauté onions until translucent, then add garlic. Stir in cream cheese and heavy cream until thickened, then add cheddar.Combine steamed cauliflower and broccoli with browned sausage, pour cheese sauce over, and mix well.Transfer to baking dish, spread evenly, and bake for 15-20 minutes until bubbly and golden brown. Nutrition Serving: 1servingCalories: 350kcalCarbohydrates: 10gProtein: 20gFat: 28gSaturated Fat: 15gPolyunsaturated Fat: 1gMonounsaturated Fat: 11gCholesterol: 80mgSodium: 800mgPotassium: 600mgFiber: 4gSugar: 2gVitamin A: 1000IUVitamin C: 70mgCalcium: 300mgIron: 2mg NotesFor a vegetarian version, omit the sausage and add flavorful veggies like spinach or bell peppers. 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