Cheesy Spinach Puffs

unsalted butter

large onion (peeled and finely chopped or grated on a cheese grater)

garlic cloves (peeled and minced or pressed)

eggs

ricotta cheese

shredded mozzarella cheese

grated Parmesan (Romano or Asiago cheese)

Italian style breadcrumbs

frozen chopped spinach (thawed and squeezed hard repeatedly to remove as much liquid as possible (*See Note Below Instructions))

salt

Optional: warm marinara or pizza sauce or Ranch dressing for dipping