Step 1

Grease a 9x13-inch casserole pan with some oil or butter and arrange chopped bread evenly in the pan.

Step 2

Spread the bell peppers, ham, and cheese evenly over the bread.

Step 3

In a large mixing bowl, add eggs, milk, mustard, green onions, garlic powder, salt, and pepper. Whisk well until evenly combined.

Step 4

Pour the egg custard mixture evenly over the bread. Use a spatula to press down gently to ensure that all the bread pieces are soaked with the egg custard.

Step 5

Cover the casserole pan with plastic cling wrap and set aside for at least 20 minutes. You can also store it in the fridge overnight until ready to bake, for an easy make ahead breakfast.

Step 6

Preheat the oven to 375F.

Step 7

Bake for 55 to 60 minutes until golden brown on the edges and the egg mixture is completely set (or a knife inserted near the center comes out clean).