Avocado, Spinach, and Artichoke Dip

large or 2 small avocados (about 1/2 pound total), halved and pitted

extra-virgin olive oil

lemon juice, or more if needed

garlic, roughly chopped

fine sea salt

red pepper flakes

Freshly ground black pepper

packed baby spinach (about 1 1/2 ounces)

well-drained marinated artichokes (from 5-ounce jar)

Serve with homemade pita chips, crackers, or veggies