Quick Spinach Quiche Recipe

Ingredients

• 1 (15 ounce) package refrigerated pie crusts
• 4 cups shredded Cheddar cheese
• 1 (12 ounce) package frozen chopped spinach, thawed and drained
• 1 cup finely chopped onion
• 12 eggs
• 2 cups milk
• salt and ground black pepper to taste