Ingredients for - Hard-Boiled Egg Casserole

1. Hard-boiled eggs, peeled and halved 8
2. Butter ¼ cup
3. All-purpose flour ¼ cup
4. Half-and-half 2 cups
5. Salt ½ teaspoon
6. Ground black pepper ¼ teaspoon
7. Garlic powder ¼ teaspoon
8. Dry mustard ¼ teaspoon
9. Shredded Gruyere cheese 1 cup
10. Freshly grated Parmesan cheese ½ cup

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.