looks like carlie's brownies Via another Pinner who wrote, "PIONEER WOMAN's Chocolate Sheet Cake Hands down.THE best choc cake." I believe this bc I love all of Ree's recipes (Ree Drummond is the Pioneer Woman.
White Texas Sheet Cake with Chocolate Fudge Frosting. Made this cake for my Husband's birthday. He loved it! A very good cake. I loved the frosting! A great cake to take to a family get together or party. Will make this cake again.