Ingredients for - Hard-Boiled Egg Casserole
How to cook deliciously - Hard-Boiled Egg Casserole
1 . Stage
Preheat oven to 350 degrees F (175 degrees C). Butter a 9-inch square baking dish.
2 . Stage
Arrange eggs, cut-side down, in the prepared baking dish.
3 . Stage
Melt butter in a saucepan over medium-low heat. Whisk flour into the melted butter until dissolved, 2 to 3 minutes. Gradually stir half-and-half into flour mixture until sauce is thickened and smooth, about 5 minutes. Season sauce with salt, pepper, garlic powder, and mustard. Stir Gruyere cheese into sauce until melted and smooth.
4 . Stage
Pour sauce over eggs and sprinkle Parmesan cheese over sauce.
5 . Stage
Bake in the preheated oven until bubbling and golden brown, 20 to 25 minutes.