Toffee Bar Cake
["2 c. light brown sugar", "2 c. sifted flour", "1 stick unsalted butter, chilled", "1 c. milk", "1 large egg", "1 tsp. vanilla", "1 tsp. baking soda", "1/2 tsp. salt", "1 bag Heath bar bits", "1/2 c. chopped nuts"]
["Heat oven to 350\u00b0.", "Grease a 13 x 9-inch pan.", "Combine sugar and flour on low speed in a mixer until thoroughly mixed.", "Cut in butter with a pastry blender until mix resembles small peas. Reserve 1/2 cup mixture for topping.", "Add milk, egg, vanilla, baking soda and salt to remaining crumb mix.", "Transfer to pan.", "Add Heath bar bits to reserved crumbs, along with nuts.", "Sprinkle on cake.", "Bake about 35 minutes until done."]
["light brown sugar", "flour", "unsalted butter", "milk", "egg", "vanilla", "baking soda", "salt", "bar bits", "nuts"]