In a large skillet, cook the sausage over medium heat until it's no longer pink. Add the onion, bell pepper, and garlic and cook until the vegetables are tender.
In a large bowl, whisk together the eggs, heavy cream, salt, and pepper.
Add the cooked sausage and vegetables to the egg mixture and stir to combine.
Pour the mixture into a 9×13-inch baking dish and top with the shredded cheese.
Bake for 25-30 minutes, or until the eggs are set and the cheese is melted and golden brown.
Remove from oven and let cool for 5 minutes before serving.
Interesting Facts
This casserole can be made ahead of time and stored in the refrigerator for up to 3 days.
You can use any type of sausage you like in this recipe, from mild to spicy.
It's a great way to use up leftover vegetables in your fridge.