Keto Broccoli and Cauliflower Au Gratin with Sausage
If you’re looking for a comforting dish that’s both delicious and easy to prepare, you’ve come to the right place! This Keto Broccoli and Cauliflower Au Gratin with Sausage is a favorite of mine because it combines cheesy goodness with hearty vegetables and savory sausage. It’s perfect for busy weeknights when you want something satisfying without spending hours in the kitchen. Plus, it’s a fantastic option for family gatherings, as everyone will love digging into this warm, cheesy bake!
This dish not only serves as an indulgent side but can easily stand alone as a full meal. The combination of broccoli and cauliflower adds nutrients while the creamy cheese sauce makes it irresistible. Trust me; once you try this recipe, it will become a go-to in your household!
Why You’ll Love This Recipe
- Easy to make: With simple steps and minimal prep time, you can whip this up even on the busiest nights.
- Family-approved: Kids and adults alike will enjoy this cheesy delight, making dinnertime more enjoyable.
- Make-ahead friendly: Prepare it in advance and just pop it in the oven when you’re ready to eat!
- Low-carb goodness: Perfect for those following a keto lifestyle without sacrificing taste or satisfaction.

Ingredients You’ll Need
Gathering the ingredients is part of the fun! You’ll find that these are wholesome and straightforward items that come together beautifully. Here’s what you’ll need for your Keto Broccoli and Cauliflower Au Gratin with Sausage:
For the Bake
- 3 cups Cauliflower Florets (lightly steamed)
- 2 cups Broccoli Florets (lightly steamed)
- 12 ounces Sliced Smoked Sausage
For the Cheese Sauce
- 2 tbsp Butter
- 1/2 Onion (diced)
- 2 tsp Minced Garlic
- 2 ounces Cream Cheese (softened)
- 2/3 cup Heavy Whipping Cream
- 1 1/2 cups Shredded Cheddar Cheese
Variations
One of the best things about this recipe is its flexibility! You can mix things up based on what you have on hand or your personal preferences.
- Swap the protein: Try using chicken or turkey sausage for a different flavor twist.
- Add more veggies: Toss in some spinach or bell peppers for extra color and nutrition.
- Change up the cheese: Experiment with mozzarella or pepper jack cheese to switch up the flavor profile.
- Make it spicier: Add diced jalapeños or a sprinkle of red pepper flakes if you like a bit of heat!
How to Make Keto Broccoli and Cauliflower Au Gratin with Sausage
Step 1: Preheat Your Oven
Preheat your oven to 350 degrees. This is an important step so that your dish bakes evenly and gets that lovely golden top we all crave.
Step 2: Sauté the Sausage
Add the sliced sausage to a skillet over medium-high heat. Sauté until seared, which brings out its rich flavors. Once done, remove it from the pan and set aside; we’ll add it back later for that delicious meatiness.
Step 3: Cook the Aromatics
Melt butter in a pot over medium heat. Stir in your diced onions, cooking until they soften—this step enhances their sweetness. Then mix in minced garlic for just about 30 seconds; you want to release that wonderful aroma without burning it.
Step 4: Create Your Cheese Sauce
Next, add cream cheese into the pot until melted. Pour in heavy whipping cream and whisk everything together well. Simmer over medium-low heat until thickened—this creates a rich base for our gratin.
Step 5: Add Cheese Magic
Stir in shredded cheddar cheese into your sauce, seasoning with salt and pepper to taste. The cheese transforms this sauce into something truly decadent, making every bite delightful!
Step 6: Combine Ingredients
In a mixing bowl, combine your lightly steamed cauliflower, broccoli, and sautéed sausage. Pour that luscious cheese sauce over everything and give it a good stir to coat all those veggies and sausage pieces.
Step 7: Bake It All Together
Spread your mixture into a greased 9×9 baking dish. Pop it into the oven and bake for about 15-20 minutes until it’s bubbly and golden brown on top. The aroma wafting through your kitchen will surely draw everyone in!
Now you’re ready to enjoy this cheesy delight! Serve hot and watch as everyone goes back for seconds!
Pro Tips for Making Keto Broccoli and Cauliflower Au Gratin with Sausage
Creating the perfect keto broccoli and cauliflower au gratin is all about a few simple tricks that elevate your dish to the next level!
- Choose Fresh Vegetables: Using fresh broccoli and cauliflower not only enhances the flavor but also adds vibrant color to your dish, making it visually appealing.
- Customize Your Sausage: Opt for your favorite type of smoked sausage or even a chicken or turkey variety. This allows you to tailor the flavor profile while keeping it healthy and keto-friendly.
- Don’t Rush the Sauce: Take your time when simmering the cheese sauce. Allowing it to thicken properly ensures a creamy texture that beautifully coats all the vegetables.
- Experiment with Cheese: While cheddar is delicious, mixing in other cheeses like mozzarella or gouda can add depth of flavor and create a more complex taste experience.
- Allow to Cool Before Serving: Letting the dish sit for a few minutes after baking can help it set up, making it easier to serve and enhancing the flavors as they meld together.
How to Serve Keto Broccoli and Cauliflower Au Gratin with Sausage
This cheesy delight deserves a beautiful presentation! Here are some ideas on how to serve your keto broccoli and cauliflower au gratin with sausage to impress family and friends.
Garnishes
- Chopped Fresh Herbs: A sprinkle of fresh parsley or chives adds a pop of color and freshness on top of your gratin.
- Red Pepper Flakes: For those who enjoy a little heat, adding red pepper flakes can give your dish an exciting kick.
Side Dishes
- Garlic Butter Green Beans: Sautéed green beans tossed in garlic butter provide a crunchy contrast that complements the creamy gratin perfectly.
- Zucchini Noodles: Light and refreshing, zucchini noodles make a great low-carb side that pairs well with this hearty dish.
- Cauliflower Rice: This versatile side is an excellent alternative to traditional rice, soaking up any extra cheese sauce while keeping it keto-friendly.
- Mixed Green Salad: A simple salad with mixed greens, cherry tomatoes, and a lemon vinaigrette adds brightness and balances out the richness of the au gratin.
With these tips and serving suggestions, you’re all set to enjoy a delicious meal that’s not just satisfying but also nourishing! Happy cooking!

Make Ahead and Storage
This Keto Broccoli and Cauliflower Au Gratin with Sausage is perfect for meal prep, allowing you to enjoy a delicious, cheesy dish throughout the week without much hassle. Preparing this dish ahead of time makes weeknight dinners a breeze!
Storing Leftovers
- Allow the au gratin to cool completely before storing.
- Transfer leftovers to an airtight container.
- Refrigerate for up to 3-4 days.
Freezing
- Let the dish cool completely before freezing.
- Use a freezer-safe container or wrap it tightly with aluminum foil.
- Freeze for up to 2-3 months for best quality.
- Label the container with the date for easy reference.
Reheating
- Thaw in the refrigerator overnight if frozen.
- Preheat your oven to 350°F (175°C).
- Cover the dish with aluminum foil to prevent drying out.
- Bake for about 20-25 minutes or until heated through.
FAQs
Here are some common questions that might help you as you prepare your Keto Broccoli and Cauliflower Au Gratin with Sausage.
Can I use different vegetables in this recipe?
Absolutely! While broccoli and cauliflower are fantastic, feel free to experiment with other low-carb vegetables like zucchini or bell peppers. Just ensure they are cooked before adding them to the cheese sauce.
What can I substitute for heavy whipping cream in Keto Broccoli and Cauliflower Au Gratin with Sausage?
You can use coconut cream or unsweetened almond milk as alternatives. Both options will give you a creamy texture while keeping it keto-friendly.
How do I make this Keto Broccoli and Cauliflower Au Gratin with Sausage dairy-free?
For a dairy-free version, substitute the cream cheese and shredded cheddar cheese with vegan cheese alternatives that melt well. You can also use nut-based cream substitutes.
Final Thoughts
I hope you enjoy making this Keto Broccoli and Cauliflower Au Gratin with Sausage as much as I do! It’s not just a side dish; it’s a comforting meal that brings warmth to any dinner table. Whether you’re prepping for a busy week or treating yourself to something special, this recipe is sure to delight. Happy cooking, and don’t forget to relish every cheesy bite!
Keto Broccoli and Cauliflower Au Gratin with Sausage
If you’re craving a comforting dish that’s both satisfying and easy to prepare, our Keto Broccoli and Cauliflower Au Gratin with Sausage is the perfect choice! This cheesy bake combines nutrient-rich broccoli and cauliflower with savory sausage, creating a delightful blend of flavors that’s sure to please everyone at the dinner table. Ideal for busy weeknights or family gatherings, this dish is not only indulgent but also low in carbs, making it a fantastic option for those following a keto lifestyle. With its creamy cheese sauce and hearty vegetables, each bite is an irresistible delight that will quickly become a family favorite.
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Total Time: 35 minutes
- Yield: Approximately 6 servings 1x
- Category: Dinner
- Method: Baking
- Cuisine: American
Ingredients
- 3 cups Cauliflower Florets (lightly steamed)
- 2 cups Broccoli Florets (lightly steamed)
- 12 ounces Sliced Smoked Sausage
- 2 tbsp Butter
- 1/2 Onion (diced)
- 2 tsp Minced Garlic
- 2 ounces Cream Cheese (softened)
- 2/3 cup Heavy Whipping Cream
- 1 1/2 cups Shredded Cheddar Cheese
Instructions
- Preheat your oven to 350°F (175°C).
- In a skillet over medium-high heat, sauté the sliced sausage until seared. Remove and set aside.
- In a pot, melt butter over medium heat, then add diced onions and cook until softened. Stir in minced garlic for about 30 seconds.
- Add cream cheese into the pot and melt it down. Pour in heavy whipping cream, whisking until combined and simmering until thickened.
- Stir in shredded cheddar cheese, seasoning with salt and pepper to taste.
- Combine steamed cauliflower, broccoli, and sautéed sausage in a mixing bowl. Pour the cheese sauce over and mix well.
- Transfer to a greased baking dish and bake for 15-20 minutes until bubbly and golden brown.
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 350
- Sugar: 3g
- Sodium: 650mg
- Fat: 28g
- Saturated Fat: 15g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 8g
- Fiber: 3g
- Protein: 20g
- Cholesterol: 85mg
