Keto Broccoli and Cauliflower Au Gratin With Sausage is the ultimate comfort food for anyone following a low-carb lifestyle. This creamy, cheesy casserole combines tender vegetables with savory smoked sausage for a protein-packed meal that satisfies even the pickiest eaters. Whether you are meal prepping for the week or looking for a crowd-pleasing dinner idea, this easy keto casserole delivers rich, indulgent flavor without the excess carbs. It is a hearty one-pan dinner that brings warmth to your table any night of the week.
15 minutes
40 minutes
55 minutes
6
Why This Recipe Works
- Perfect for busy weeknights with minimal cleanup required.
- Packed with healthy fats and fiber to keep you full longer.
- Customizable flavors allow you to swap in your favorite sausage variety.
- The golden, bubbly cheese crust is irresistible for both kids and adults.
- Naturally low-carb and keto-friendly for worry-free meal planning.
Ingredients
To prepare this Keto Broccoli and Cauliflower Au Gratin With Sausage, you will need a few simple, high-quality ingredients. The combination of creamy cheese sauce and smoky protein creates a perfect balance of textures and flavors.
- 3 cups Cauliflower Florets (lightly steamed)
- 2 cups Broccoli Florets (lightly steamed)
- 12 ounces Sliced Smoked Sausage (ensure it is beef or turkey based)
- 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
Ingredient Notes and Substitutions
Making this dish fits your dietary preferences is easy with a few simple swaps.
- Use pre-steamed bags of frozen veggies to save significant prep time.
- You can replace cheddar with Gruyere or Monterey Jack for a different melt profile.
- Fresh garlic is best, but granulated garlic works in a pinch if you are out.
- Feel free to add a pinch of nutmeg or smoked paprika to the cream sauce for depth.
- Ensure your smoked sausage is nitrate-free and fully cooked before adding it to the pan.
How to Make It
Step 1: Prep and Preheat
Preheat your oven to 375 degrees Fahrenheit. While the oven heats, steam your cauliflower and broccoli florets until they are just fork-tender. Drain them well to avoid excess moisture in the casserole.
Step 2: Brown the Sausage
In a large skillet over medium heat, add your sliced smoked sausage. Brown the pieces until they have a nice crisp exterior, then remove them from the pan and set aside.
Step 3: Create the Creamy Base
In the same skillet, melt the butter and add the onions. Sauté until translucent, then stir in the garlic. Whisk in the heavy cream and softened cream cheese until the sauce is smooth and velvety. Remove from heat once slightly thickened.
Step 4: Combine and Bake
Toss the steamed veggies and sausage into the sauce, coating them thoroughly. Transfer the mixture to a baking dish and top with the shredded cheddar. Bake for 20-25 minutes until the cheese is bubbly and slightly golden on top.
Pro Tips
- Pat your steamed vegetables dry with a paper towel to prevent a watery casserole.
- Shred your own cheddar cheese from a block for a superior melt and fewer additives.
- If you prefer a crispy topping, broil the dish for the final 2 minutes of cooking.
- Let the casserole sit for 5 minutes after removing from the oven to allow the sauce to set.
Serving Suggestions
This Keto Broccoli and Cauliflower Au Gratin With Sausage works perfectly as a stand-alone main dish, but you can enhance the meal with these pairings:
- Serve alongside a crisp green side salad with vinaigrette.
- Add a side of buttery roasted radishes for extra texture.
- Pair with a light garlic-herb cauliflower mash.
- Enjoy with a chilled glass of sparkling water with lemon.
Storage and Reheating
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, warm individual portions in the microwave or place the whole dish in a 350-degree oven until heated through and bubbling again. Avoid freezing this dish, as the cream sauce can separate upon thawing.
FAQs
Can I make this recipe ahead of time?
Yes, you can assemble the casserole up to 24 hours in advance and store it in the fridge. Simply add 5-10 minutes to the bake time if putting it into the oven while cold.
Can I freeze this recipe?
Freezing is not recommended because the creamy cheese sauce can become grainy and separate. It is best enjoyed fresh or from the refrigerator.
What can I serve with this recipe?
A fresh green salad or roasted low-carb vegetables complement this rich dish perfectly. It also pairs well with simple grilled chicken if you need extra protein.
How do I keep this recipe from drying out?
Ensure the sauce is thick but pourable and cover the baking dish with foil for the first half of cooking. Adding a little extra cream can also help keep the mixture moist.
Final Thoughts
Keto Broccoli and Cauliflower Au Gratin With Sausage is a fantastic way to enjoy a hearty, comforting dinner while sticking to your nutritional goals. By combining fresh greens with savory sausage and a silky cheese sauce, you create a meal that feels indulgent yet remains entirely keto-compliant. This recipe is simple to assemble and perfect for family dinners or meal prep. We hope you enjoy this cheesy delight as much as we do. Give it a try tonight and see how easy low-carb living can be!
Print
Keto Broccoli and Cauliflower Au Gratin With Sausage
- Prep Time: 15 Mins
- Cook Time: 40 Mins
- Total Time: 55 Mins
- Yield: 6 servings 1x
- Category: Dinner
- Method: Baking
- Cuisine: American
- Diet: Keto
Description
Indulge in this comforting Keto Broccoli and Cauliflower Au Gratin with Sausage, a perfect one-pan meal for busy weeknights. Featuring tender, lightly steamed cauliflower and broccoli florets tossed in a rich, creamy garlic-cheese sauce and studded with savory beef or turkey smoked sausage, this casserole is both hearty and low-carb. Topped with a golden, bubbly layer of melted cheddar, it is the ultimate satisfying dish for those following a ketogenic lifestyle without sacrificing flavor.
Ingredients
3 cups Cauliflower Florets, lightly steamed
2 cups Broccoli Florets, lightly steamed
12 ounces Sliced Smoked Beef or Turkey 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
Step 1: Prep and Preheat
Preheat your oven to 375 degrees Fahrenheit. While the oven heats, steam your cauliflower and broccoli florets until they are just fork-tender. Drain them well to avoid excess moisture in the casserole.
Step 2: Brown the Sausage
In a large skillet over medium heat, add your sliced smoked sausage. Brown the pieces until they have a nice crisp exterior, then remove them from the pan and set aside.
Step 3: Create the Creamy Base
In the same skillet, melt the butter and add the onions. Sauté until translucent, then stir in the garlic. Whisk in the heavy cream and softened cream cheese until the sauce is smooth and velvety. Remove from heat once slightly thickened.
Step 4: Combine and Bake
Toss the steamed veggies and sausage into the sauce, coating them thoroughly. Transfer the mixture to a baking dish and top with the shredded cheddar. Bake for 20-25 minutes until the cheese is bubbly and slightly golden on top.
Pro Tips
- Pat your steamed vegetables dry with a paper towel to prevent a watery casserole.
- Shred your own cheddar cheese from a block for a superior melt and fewer additives.
- If you prefer a crispy topping, broil the dish for the final 2 minutes of cooking.
- Let the casserole sit for 5 minutes after removing from the oven to allow the sauce to set.
Notes
Use pre-steamed frozen vegetables to save prep time. You can replace cheddar cheese with Gruyere or Monterey Jack for a different melt profile. If you don’t have fresh garlic, you can substitute with 1/2 teaspoon of garlic powder.
Nutrition
- Serving Size: 1 portion
- Calories: 385
- Sugar: 4g
- Sodium: 720mg
- Fat: 31g
- Saturated Fat: 14g
- Carbohydrates: 9g
- Fiber: 3g
- Protein: 18g
- Cholesterol: 85mg