Ingredients: 10 ounces frozen chopped spinach, thawed and squeezed dry 8 ounces ricotta cheese 4 ounces mozzarella cheese, shredded 1 ounce Parmesan cheese, grated 1 tablespoon olive oil 1 large egg, lightly beaten with 2 tablespoons water, plus 1 large egg yolk 1 teaspoon garlic powder 1…