Creating Keto Broccoli and Cauliflower Au Gratin with Sausage is simple and straightforward. Follow these steps to make this delicious dish:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Cook the Sausage: In a large skillet over medium heat, cook the ground sausage until browned and cooked through, about 7-10 minutes. Drain excess grease if necessary.
3. Blanch the Vegetables: In a pot of boiling water, blanch the broccoli and cauliflower for about 3-4 minutes until tender but still bright in color. Drain and set aside.
4. Make the Cheese Sauce: In a medium saucepan, combine the heavy cream, garlic powder, onion powder, salt, pepper, and paprika. Heat over medium heat, stirring frequently until it begins to simmer.
5. Add Cheese: Remove the saucepan from heat and stir in the cheddar and mozzarella cheese until melted and smooth.
6. Combine Ingredients: In a large mixing bowl, combine the cooked sausage, blanched broccoli, and cauliflower. Pour the cheese sauce over the mixture and stir until everything is evenly coated.
7. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it evenly.
8. Add Parmesan Topping: Sprinkle the grated Parmesan cheese over the top for added flavor and a crispy finish.
9. Bake: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the top is golden and bubbly.
10. Cool Before Serving: Remove from the oven and let it cool for a few minutes before serving.

By following these steps, you’ll create an incredible Keto Broccoli and Cauliflower Au Gratin with Sausage that is not only delicious but also visually appealing.