Pre-heat the oven to 375°F.
In a large skillet, over medium-high heat, sauté the sausage, onions, red pepper and green pepper until meat and vegetables have been cooked.
Spray a 9 inch x 13-inch baking dish.
Open Grands and place them on the bottom of the greased baking dish.
Place 6 frozen hashbrowns rectangles on top of the Grands.
Pour the sausage, onion and peppers over the hash browns; use a spatula to evenly distribute over the top of the casserole.
In a small bowl, slightly beat the eggs with the milk; pour over the entire casserole.
Place in the pre-heated oven and bake for 25 – 30 minutes.