Preheat your oven to 350°F (175°C).

Sauté sliced smoked sausage in a skillet over medium-high heat for 5-7 minutes until browned. Remove from skillet.

Melt 2 tablespoons of butter in the same skillet. Add diced onion and sauté for 3-4 minutes until translucent.

Stir in minced garlic and sauté for 30 seconds. Add 8 ounces of cream cheese, melting and mixing well.

Pour in 1 cup of heavy whipping cream, simmering for 4-5 minutes until thickened.

Fold in 2 cups of shredded cheddar cheese, mixing until melted. Season with salt and pepper.

In a bowl, combine steamed cauliflower, broccoli, and sautéed sausage. Pour cheese sauce over and mix gently.

Transfer mixture to a 9x9 baking dish and bake for 15-20 minutes until bubbly and golden brown.