Crustless Spinach Artichoke Jalapeno Quiche

bag (12-ounce) frozen chopped spinach, thawed and squeezed of excess moisture

of a 12-ounce bag (6 ounces) frozen artichoke hearts, thawed, coarsely chopped and patted dry

bunch scallions, white and light green part only, chopped

jalapeno peppers, seeded if desired, finely chopped

garlic, minced

shredded Swiss cheese

shredded mild Cheddar cheese

salt

freshly ground black pepper

large eggs

milk, half-and-half or heavy cream