Frittata with Grains

Unlike their folded counterparts, frittatas can be loaded up with all kinds of cheeses and cooked foods. They’re so versatile—I make them for lunch, supper, and brunch, and for an appetizer, cut into small wedges or squares and served with toothpicks. You can go ahead and make them in advance, too—they’re just as good cold or at room temperature as they…