Caramelizing onions brings out their sweetness, a lovely addition to a quiche-like appetizer bite.
Try using Monterey Jack or mozzarella in place of the Cheddar cheese.
Be patient when caramelizing the onions. If you rush them, they won't taste as sweet.
Chile Cheese Puffs
Mini Swiss Quiches
Mini Cheese and Onion Pastries
Spicy Mexican Quiche Cups
Caramelized-Onion Squares with Olives