The Grumpy House Breakfast Casserole is a baked egg and cheese casserole and easy to make for just one person. Vegetarian sausage is added (you can use regular if you wish) then baked in the oven. When it comes out of the oven it is topped with more cheese and a sprinkling of parsley and tomatoes.
In small skillet, saute butter, onion and garlic until onion is slightly softened (about 1-2 minutes).Toss croutons with butter garlic mixture and place in a single serve souffle baking dish.
Toss in breakfast sausage pieces. Top with 1 tablespoon cheese.Whisk egg, mustard, milk, and pepper until well blended.
Pour egg mixture over top of crouton mixture. Sprinkle with remaining tablespoon of cheese. Bake for 20 minutes or until knife comes out clean when inserted into the center of casserole.