For a sweet treat, and very simple I like mud Buddies.
The recipe is usually on the back of the box of Chex.
Chex (What ever flavor you like)
Melt the PB and Chocolate chips in a big pot on the stove (You microwave too if you like)
Now mix in the Chex until coated evenly.
Dump the coated Chex into a 2 gallon freezer bag full of Powdered sugar. Seal the bag and shake it to coat the CHex.
Let cool. You're done.
For a twist on the traditional hamburger, use some soy sauce, shiracha(spicy chili paste), honey and onion soup mix in the ground beef for an out of this world flavored burger.