Eggs with mozzarella

1 teaspoon unsalted butter , for the tins 4 ham slices (the largest you can find at the deli) 4 teaspoons pesto sauce 4 large eggs 8 pieces mozzarella cheese[...]

2 teaspoons olive oil 1 small zucchini or 1 small summer squash, halved lengthwise and thinly sliced 1/2 cup onion , chopped 1/2 cup red bell peppers or 1/2[...]