Spinach Artichoke Pesto Tortellini Soup

olive oil

small yellow onion, diced

garlic, minced

frozen artichoke hearts

vegetable broth

cannellini or Great Northern white beans, rinsed and drained

cheese tortellini (refrigerated or frozen)

fresh spinach leaves, roughly chopped

basil pesto

Salt and black pepper,

Grated Parmesan cheese, for serving, optional