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.
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Mini Swiss Quiches
Spicy Mexican Quiche Cups
Mini Cheese and Onion Pastries
Caramelized Onion and Peppered Bacon Flatbread