Hands down, my award for MVP of the nut world would go to hazelnuts. They may not be the cheapest, and they may be the devil to skin, but their flavor is my absolute favorite. I love making my own hazelnut butter by blending hazelnuts and a bit of oil in the food processor, then substituting hazelnut butter for peanut butter in recipes. Chopped hazelnuts are also delicious in cookies, brownies, and other baked goods.