Perfect Frittata with Zucchini and Provolone
After adding the eggs to the skillet, use a heatproof flexible spatula to stir and push them from the edges to the center of the pan as they cook, so the liquid parts run underneath.
1 cup sliced shallots, 3 cups sliced mushrooms, 1/4 cup chopped parsley, 3/4 cup grated Gruyere
1 cup sliced leeks (white and light-green parts), 1 1/4 cups halved cherry tomatoes, 1/4 cup thinly sliced mint, 3/4 cup crumbled fresh goat cheese
1 cup thinly sliced onion, 1 1/2 cups fresh corn kernels, 1/4 cup thinly sliced cilantro, 3/4 cup grated pepper Jack