All the baking ingredients to make Reese's Puffs Cookies. Simply pour the mason jar mix into a bowl and add egg, slightly melted butter, and vanilla, according to the directions on the label. Combine and bake at 350 degrees for 7-10 minutes. Contains: flour, baking soda, salt, golden yellow sugar, cocoa, Reese's Puffs, and peanut butter chips. Jars by Jodi creates mason jar cookie and dessert mixes - perfect for party favours, presents, client gifting, or an easy way to make treats at home. Yield per mix: 12-15 cookies (mini size) 24-30 cookies (regular size)