Chocolate Peanut Butter Marshmallow Crunch Brownies These brownies are sinful and delicious! The brownie is also flourless making it extra rich and fudgy.  You can switch it up and use Cocoa Krispies instead of regular if you prefer. You may need: 9x13 pan Nonstick Foil Chocolate Peanut Butter Marshmallow Crunch Brownies Ingredients Flourless Brownies 2