Step 1

Preheat oven to 350 F.

Step 2

Layer the hashbrowns, red bell pepper, onion, and spinach and half the cheese (if using) in a 9 x 13 inch casserole dish.

Step 3

Whisk the eggs, milk, garlic powder, salt, and pepper in a bowl. Pour evenly over vegetable mixture. Top with the rest of the cheese (if using).

Step 4

Bake 50 - 60 minutes, until the center is cooked through and the cheese is golden (if using). Serve warm.