Pillsbury Chocolate Walnut Brownie Mix comes in a 13.5 ounce box. Pillsbury offers a variety of delicious brownie mixes that are the perfect everyday dessert or snack. It does not contain any cholesterol. It is a Kosher certified product. Pillsbury Baking has delicious recipes, baking basics and baking tips to help you make your favorite homemade treats. From quality cake, brownie and quickbread mixes, to frostings and flour, Pillsbury Baking offers a variety of products and flavors for whatever your taste may be. Pillsbury Baking also offers reduced sugar baking mixes and frostings for your special diet needs.