Alaina Sullivan shows off her Spinach Frittata with Caramelized Onions.

A crown of caramelized onions is all it takes to elevate a frittata from pauper to prince. This eggy creation is simply an amalgam of forlorn contents of my fridge (read: humble and endlessly adaptable), but what really makes it shine is the sweet, slightly charred onions that are welded to its surface. Caramelized slowly, then scattered across the top right before the eggs are set, the golden strands crisp up deliciously in the oven and bring a deep, seductive flavor to the dish.