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Home » Recipe Index » Keto Broccoli and Cauliflower Au Gratin with Sausage

Keto Broccoli and Cauliflower Au Gratin with Sausage

November 9, 2025 by Angela

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The Keto Broccoli and Cauliflower Au Gratin with Sausage is an indulgent dish that’s perfect for any occasion. This recipe combines tender broccoli and cauliflower with savory sausage, all enveloped in a creamy, cheesy sauce. Not only is it delicious, but it also fits perfectly into a low-carb lifestyle. Whether you’re serving it as a side at dinner or making it the star of your meal, this dish will impress everyone at the table!

Why You’ll Love This Recipe

  • Cheesy Goodness: The rich blend of cheeses creates a creamy texture that everyone loves.
  • Low-Carb Delight: Ideal for those following a keto diet, this dish is low in carbs but high in flavor.
  • Versatile Meal: Enjoy it as a side dish or make it the main course; either way, it’s satisfying!
  • Quick Preparation: With only 15 minutes of prep time, you can have this dish ready in no time.
  • Family-Friendly: Kids and adults alike will enjoy this tasty way to eat their vegetables.

Tools and Preparation

Before getting started with your Keto Broccoli and Cauliflower Au Gratin with Sausage, gather your tools. Having everything on hand makes cooking easier and more enjoyable.

Essential Tools and Equipment

  • Skillet
  • Pot
  • Mixing bowl
  • Baking dish (9×9)
  • Whisk

Importance of Each Tool

  • Skillet: Perfect for sautéing sausage and onions to bring out their flavors.
  • Mixing bowl: Essential for combining all ingredients before baking.
  • Baking dish: Ensures even cooking and easy serving of your au gratin.

Ingredients

  • 3 cups Cauliflower Florets (lightly steamed)
  • 2 cups Broccoli Florets (lightly steamed)
  • 12 ounce 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

How to Make Keto Broccoli and Cauliflower Au Gratin with Sausage

Step 1: Preheat the Oven

Preheat your oven to 350 degrees Fahrenheit. This ensures that the dish cooks evenly once it’s ready to bake.

Step 2: Sauté the Sausage

  • Heat a skillet over medium-high heat.
  • Add the sliced sausage to the skillet.
  • Sauté until seared, then remove from heat and set aside.

Step 3: Prepare the Cheese Sauce

  • In a pot over medium heat, melt the butter.
  • Stir in the diced onions and sauté until they are softened.
  • Mix in the minced garlic and sauté for an additional 30 seconds.
  • Add in the softened cream cheese and stir until melted.

Step 4: Combine Creams

  • Pour in the heavy whipping cream.
  • Whisk together until well combined.
  • Simmer over medium-low heat until the sauce thickens.

Step 5: Add Cheese

Stir in the shredded cheddar cheese. Season with salt and pepper to taste.

Step 6: Combine Ingredients

In a mixing bowl:
Combine the lightly steamed cauliflower, broccoli florets, and sautéed sausage.
Pour the prepared cheese sauce over the mixture and stir well to combine.

Step 7: Bake

Spread the mixture into a greased 9×9 baking dish. Bake for about 15-20 minutes until golden brown and bubbly.

Enjoy your delicious Keto Broccoli and Cauliflower Au Gratin with Sausage!

How to Serve Keto Broccoli and Cauliflower Au Gratin with Sausage

Keto broccoli and cauliflower au gratin with sausage is a delightful and hearty dish that can be served in several ways. Here are some serving suggestions to enhance your dining experience.

As a Standalone Meal

  • This dish is filling enough to serve as a complete meal on its own, packed with protein and vegetables.

Paired with a Fresh Salad

  • A refreshing green salad balances the richness of the au gratin, adding crunch and freshness.

Accompanied by Low-Carb Bread

  • Serve with slices of low-carb bread for soaking up the cheesy goodness, making each bite even more satisfying.

With Pickles or Olives

  • The tangy flavors of pickles or olives provide a nice contrast to the creamy dish, enhancing the overall taste.

Served in Individual Portions

  • For an elegant touch, consider serving the au gratin in ramekins for individual servings, perfect for dinner parties.
Keto

How to Perfect Keto Broccoli and Cauliflower Au Gratin with Sausage

To make your keto broccoli and cauliflower au gratin with sausage even better, follow these helpful tips.

  • Use fresh vegetables – Fresh broccoli and cauliflower will provide better texture and flavor than frozen alternatives.
  • Adjust cheese types – Experiment with different cheeses like mozzarella or Gruyère for unique flavor profiles.
  • Monitor cooking time – Keep an eye on the baking time; overcooking can lead to loss of texture.
  • Season generously – Don’t be shy with salt and pepper; proper seasoning enhances the flavors significantly.
  • Let it rest – Allow the dish to cool for a few minutes before serving; this helps it set better for easier serving.
  • Add herbs – Fresh herbs like parsley or thyme can brighten up the flavor and add a nice visual appeal.

Best Side Dishes for Keto Broccoli and Cauliflower Au Gratin with Sausage

When enjoying keto broccoli and cauliflower au gratin with sausage, consider these delightful side dishes that complement its flavors perfectly.

  1. Garlic Butter Mushrooms – Sautéed mushrooms in garlic butter add an earthy taste that pairs well with cheesy dishes.
  2. Zucchini Noodles – Lightly sautéed zucchini noodles offer a fresh, low-carb option alongside the rich gratin.
  3. Roasted Asparagus – Simple roasted asparagus provides a crunchy texture that contrasts well with the creamy au gratin.
  4. Cauliflower Rice – Fluffy cauliflower rice can soak up any extra cheese sauce while keeping carbs low.
  5. Crispy Brussels Sprouts – Roasted until crispy, Brussels sprouts add depth and flavor that complements the main dish.
  6. Coleslaw – A tangy coleslaw gives a refreshing crunch that balances out the richness of the au gratin.

Common Mistakes to Avoid

When preparing Keto Broccoli and Cauliflower Au Gratin with Sausage, it’s easy to make a few common mistakes. Here’s how to avoid them:

  • Skipping the steaming step: Not steaming the broccoli and cauliflower can lead to a watery dish. Lightly steam the veggies to ensure they stay firm and absorb the cheese sauce well.
  • Overcooking the sausage: Cooking sausage for too long can make it dry. Sauté just until seared for a juicy flavor that complements the dish.
  • Neglecting seasoning: Forgetting to season your cheese sauce will result in blandness. Always taste and adjust salt and pepper before mixing in your vegetables.
  • Using cold cream cheese: Adding cold cream cheese can cause clumps in your sauce. Make sure it’s softened at room temperature for a smooth blend.
  • Not allowing enough baking time: Rushing the baking process might leave the dish undercooked. Bake long enough for a bubbly, golden top that enhances flavor.

Refrigerator Storage

  • Store leftovers in an airtight container.
  • Refrigerate within two hours of cooking.
  • Consume within 3–4 days for best freshness.

Freezing Keto Broccoli and Cauliflower Au Gratin with Sausage

  • Use freezer-safe containers or heavy-duty freezer bags.
  • Label containers with dates for tracking.
  • Freeze for up to 2–3 months for optimal taste.

Reheating Keto Broccoli and Cauliflower Au Gratin with Sausage

  • Oven: Preheat to 350°F (175°C), cover with foil, and heat until warm throughout (about 20 minutes).
  • Microwave: Place in a microwave-safe dish, cover loosely, and heat in 1-minute intervals until hot.
  • Stovetop: Warm over low heat in a pan, stirring occasionally to prevent sticking.

Frequently Asked Questions

What is Keto Broccoli and Cauliflower Au Gratin with Sausage?

Keto Broccoli and Cauliflower Au Gratin with Sausage is a creamy, cheesy side dish that combines vegetables with flavorful sausage, perfect for low-carb diets.

Can I use different types of cheese?

Yes, feel free to experiment! Try mozzarella or gouda instead of cheddar for unique flavors while keeping it keto-friendly.

How do I make this dish vegetarian?

To make it vegetarian, simply omit the sausage and add extra vegetables like mushrooms or bell peppers for added texture.

Can I prepare this dish ahead of time?

Absolutely! Assemble everything ahead of time and refrigerate. Just bake it when you’re ready to serve.

Final Thoughts

Keto Broccoli and Cauliflower Au Gratin with Sausage is not only delicious but also versatile. This creamy dish makes an excellent side or main course. Feel free to customize it by adding your favorite veggies or spices. Give it a try; you won’t be disappointed!

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Keto Broccoli and Cauliflower Au Gratin with Sausage

Keto Broccoli and Cauliflower Au Gratin with Sausage
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Keto Broccoli and Cauliflower Au Gratin with Sausage is a rich and satisfying dish that takes comfort food to the next level while keeping it low-carb. This delightful casserole features tender, lightly steamed broccoli and cauliflower combined with savory sausage, all enveloped in a creamy cheese sauce. Perfect for family dinners or gatherings, this versatile dish can be enjoyed as a main course or a hearty side. With just 15 minutes of prep time, you can whip up this indulgent meal that will impress both keto dieters and non-dieters alike.

  • Author: Angela
  • Prep Time: 15 minutes
  • Cook Time: 20 minutes
  • Total Time: 35 minutes
  • Yield: Serves 6
  • Category: Main
  • Method: Baking
  • Cuisine: Keto

Ingredients

Scale
  • 3 cups Cauliflower Florets (lightly steamed)
  • 2 cups Broccoli Florets (lightly steamed)
  • 12 ounce 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

  1. Preheat your oven to 350°F (175°C).
  2. In a skillet over medium-high heat, sauté the sliced sausage until seared, then set aside.
  3. In a pot, melt butter over medium heat and sauté diced onions until soft. Add minced garlic and cook briefly.
  4. Stir in softened cream cheese until melted, then add heavy whipping cream and whisk until thickened.
  5. Mix shredded cheddar cheese into the sauce; season with salt and pepper.
  6. In a bowl, combine steamed broccoli, cauliflower, and sausage; pour cheese sauce over and mix well.
  7. Spread mixture into a greased baking dish and bake for 15-20 minutes until golden brown.

Nutrition

  • Serving Size: 1 cup (240g)
  • Calories: 380
  • Sugar: 3g
  • Sodium: 720mg
  • Fat: 30g
  • Saturated Fat: 15g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 8g
  • Fiber: 3g
  • Protein: 25g
  • Cholesterol: 105mg

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