Everything - it turns up in omelets, on toast, in sandwiches, on crepes, mixed into or garnishing dishes, in a multitude of desserts, as a topping for a coffee drink, and even for some alcoholic libations...You name it.
Europeans always laughed at Americans for our love of peanut butter, but I think the French and Italians go way beyond us!
Spam, Spam, Spam, Spam, Spam, Spam, Spam, Spam, Eggs and Spam, Spam, Spam, Spam, Spam, Spam, and strawberry tart.
When I wad a teenager I knew a a kid from New Zealand who loved peanut butter.