Mediterranean Strata Quiche

Ingredients

• 1 red onion, cut in half and thinly sliced
• 2 tablespoons olive oil
• 2 garlic cloves, minced
• 12 sweet red pepper, thinly sliced, then cut into 1-inch pieces
• 2 cups Italian bread, day-old and cut in 1/2-inch cubes
• 34 cup feta cheese, crumbled
• 5 eggs
• 2 cups milk
• 1 teaspoon dried oregano
• 14 teaspoon fresh ground black pepper