Quick Spinach Quiche

Ingredients (8)

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