Keto Broccoli and Cauliflower Au Gratin with Sausage
If you’re looking for a dish that’s both comforting and satisfying, then Keto Broccoli and Cauliflower Au Gratin with Sausage is just what you need! This recipe has quickly become a favorite in my kitchen because it combines creamy cheese, hearty veggies, and savory sausage into one delicious meal. Whether you’re preparing a cozy dinner for the family or need something special for a gathering, this dish is sure to impress.
The best part? It’s incredibly easy to make! With simple ingredients and straightforward steps, you’ll have a cheesy delight ready in no time. Plus, it’s perfect for those busy weeknights when you want something healthy without sacrificing flavor.
Why You’ll Love This Recipe
- Deliciously Cheesy: The combination of melted cheese makes every bite irresistible.
- Family-Friendly: This dish is loved by kids and adults alike, making it a hit at the dinner table.
- Quick Prep: With only 15 minutes of prep time, you can whip this up even on your busiest days.
- Make-Ahead Friendly: You can prepare it ahead of time and just pop it in the oven when you’re ready to serve.
- Versatile Meal: Serve it as a side or make it the star of your main course!

Ingredients You’ll Need
This recipe features simple, wholesome ingredients that come together beautifully. Here’s what you’ll need to create this cheesy delight:
Vegetables
- 3 cups Cauliflower Florets (lightly steamed)
- 2 cups Broccoli Florets (lightly steamed)
Protein
- 12 ounces Sliced Smoked Sausage
Dairy
- 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
This recipe is quite flexible and can be customized based on your preferences or what you have on hand. Here are some fun variations to try:
- Swap the protein: Use turkey sausage or chicken sausage for a lighter option.
- Add more veggies: Toss in some spinach or bell peppers for extra nutrition and flavor.
- Spice it up: Add red pepper flakes or your favorite herbs to give this dish a little kick.
- Go dairy-free: Substitute with vegan cream cheese and non-dairy cheese alternatives for a plant-based version.
How to Make Keto Broccoli and Cauliflower Au Gratin with Sausage
Step 1: Prepare the Oven
First things first, preheat your oven to 350 degrees Fahrenheit. This step ensures that your au gratin cooks evenly and gets that beautiful golden top.
Step 2: Sauté the Sausage
Next, add the sliced sausage to a skillet over medium-high heat. Sauté until it’s nicely seared. This not only enhances its flavor but also adds some delightful texture. Once done, remove it from the skillet and set aside.
Step 3: Sauté Onions and Garlic
In the same skillet, melt the butter over medium heat. Stir in the diced onions and sauté them until they are softened. Then mix in the minced garlic and sauté for about 30 seconds until fragrant. This step builds a flavorful base for your cheese sauce.
Step 4: Create the Cheese Sauce
Add the cream cheese into the pot until melted, then pour in heavy whipping cream while whisking continuously to combine well. Let this mixture simmer over medium-low heat until thickened—this will create that rich sauce we all love.
Step 5: Mix Everything Together
Stir in shredded cheddar cheese into your creamy mixture and season with salt and pepper to taste. Then, combine your lightly steamed cauliflower, broccoli, and cooked sausage in a mixing bowl, pouring over that luscious cheese sauce. Give everything a good stir so each piece gets coated.
Step 6: Bake It Up!
Spread this scrumptious mixture into a 9×9 baking dish evenly. Now it’s time to bake! Pop it into your preheated oven for about 15-20 minutes until bubbly and golden brown on top.
And there you have it—a delightful Keto Broccoli and Cauliflower Au Gratin with Sausage that’s perfect for any occasion! Enjoy every cheesy bite!
Pro Tips for Making Keto Broccoli and Cauliflower Au Gratin with Sausage
Cooking can be a delightful experience, especially when you have some handy tips to ensure your dish turns out perfectly!
- Steam veggies lightly: Steaming your broccoli and cauliflower just enough before adding them to the dish helps retain their vibrant color and nutrients while ensuring they are tender but not mushy.
- Choose quality sausage: Opt for a high-quality smoked sausage that is free from fillers. This adds depth of flavor to your au gratin and enhances the overall taste of the dish.
- Use fresh garlic: Fresh minced garlic brings a punch of flavor compared to powdered options. It infuses your cheese sauce with a rich aroma that complements the vegetables beautifully.
- Don’t rush the cheese sauce: Allowing the cheese sauce to simmer will thicken it properly and create a creamier texture. This step ensures every bite is luxuriously cheesy!
- Experiment with cheeses: While cheddar is fantastic, feel free to mix in other cheeses like mozzarella or gouda for added flavor complexity. Just remember to keep an eye on the total carb count if you’re strictly following keto.
How to Serve Keto Broccoli and Cauliflower Au Gratin with Sausage
Presenting your Keto Broccoli and Cauliflower Au Gratin with Sausage can elevate your meal from simple to spectacular! Here are some ideas for serving this comforting dish that will impress your family and friends.
Garnishes
- Chopped chives: Sprinkle freshly chopped chives on top for a burst of color and mild onion-like flavor that pairs wonderfully with the rich cheese sauce.
- Crushed red pepper flakes: If you enjoy a bit of heat, add a pinch of crushed red pepper flakes for a spicy kick that contrasts nicely with the creaminess of the gratin.
Side Dishes
- Garlic Butter Green Beans: These tender green beans sautéed in garlic butter make for a perfect, light side that complements the richness of the au gratin without overpowering it.
- Zucchini Noodles: Lightly sautéed zucchini noodles offer a refreshing contrast in texture and flavor while keeping everything low-carb and keto-friendly.
- Cauliflower Rice: This versatile alternative can soak up any extra sauce from your gratin, making it an excellent side that keeps you well within your carb limits.
By incorporating these serving suggestions, you’ll create a delightful dining experience that’s sure to please everyone at the table! Enjoy every cheesy bite!

Make Ahead and Storage
This Keto Broccoli and Cauliflower Au Gratin with Sausage is a fantastic choice for meal prep! It stores well and can be made ahead of time, making it perfect for busy weeknights or when you want to plan your meals in advance.
Storing Leftovers
- Allow the dish to cool completely before storing.
- Place leftovers in an airtight container in the refrigerator.
- Consume within 3-4 days for best freshness.
Freezing
- Let the au gratin cool completely before freezing.
- Transfer it to a freezer-safe container or wrap it tightly in plastic wrap and aluminum foil.
- Store in the freezer for up to 2-3 months.
Reheating
- To reheat from frozen, thaw overnight in the refrigerator before warming.
- Preheat your oven to 350°F (175°C) and bake until heated through, about 20-25 minutes.
- Alternatively, you can reheat individual servings in the microwave for a quick option.
FAQs
If you’re curious about this recipe, here are some common questions answered!
Can I use other vegetables in Keto Broccoli and Cauliflower Au Gratin with Sausage?
Absolutely! Feel free to mix in other low-carb veggies like zucchini or spinach to customize your dish.
How can I make Keto Broccoli and Cauliflower Au Gratin with Sausage dairy-free?
You can substitute the cream cheese and heavy whipping cream with dairy-free alternatives such as coconut cream and cashew cheese for a delicious non-dairy version!
What is the serving size for Keto Broccoli and Cauliflower Au Gratin with Sausage?
This recipe serves approximately 6 people, making it ideal for family dinners or meal prep!
Final Thoughts
I hope you find joy in making this Keto Broccoli and Cauliflower Au Gratin with Sausage! It’s not just a side dish; it’s a comforting meal brimming with flavor. I encourage you to gather your loved ones around the table and enjoy every cheesy bite together. Happy cooking, and I’m excited for you to try this delightful recipe!
Keto Broccoli and Cauliflower Au Gratin with Sausage
Keto Broccoli and Cauliflower Au Gratin with Sausage is a creamy, cheesy delight that transforms simple vegetables into a comforting dish your whole family will love. This low-carb recipe combines lightly steamed broccoli and cauliflower with savory sausage, enveloped in a rich cheese sauce that’s easy to prepare. Perfect for a cozy dinner or meal prep, this gratin is not only satisfying but also versatile enough to serve as a side or main course. With just 15 minutes of prep time, you’ll have a delicious meal ready to impress!
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Total Time: 35 minutes
- Yield: Serves approximately 6 people 1x
- Category: Dinner
- Method: Baking
- Cuisine: Low-Carb
Ingredients
- 3 cups cauliflower florets (lightly steamed)
- 2 cups broccoli florets (lightly steamed)
- 12 ounces sliced smoked sausage
- 2 tablespoons butter
- 1/2 onion (diced)
- 2 teaspoons minced garlic
- 2 ounces cream cheese (softened)
- 2/3 cup heavy whipping cream
- 1 1/2 cups shredded cheddar cheese
Instructions
- Preheat the oven to 350°F (175°C).
- Sauté the sliced sausage in a skillet over medium-high heat until seared, then remove and set aside.
- In the same skillet, melt butter and sauté onions until softened; add garlic and cook for an additional 30 seconds.
- Stir in cream cheese until melted; whisk in heavy whipping cream and simmer until thickened.
- Mix in shredded cheddar cheese, then combine with steamed cauliflower, broccoli, and cooked sausage.
- Pour mixture into a baking dish and bake for 15-20 minutes until bubbly and golden brown.
Nutrition
- Serving Size: Approximately 1 cup (240g)
- Calories: 360
- Sugar: 4g
- Sodium: 800mg
- Fat: 28g
- Saturated Fat: 14g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 8g
- Fiber: 3g
- Protein: 20g
- Cholesterol: 80mg
