Brownie Cheesecake Bars
["1 1/2 c. flour", "1 1/2 c. sugar", "2/3 c. butter, melted", "2/3 c. Hershey's cocoa", "3 eggs, divided", "1/2 c. milk", "3 tsp. vanilla extract, divided", "1/2 tsp. baking powder", "1 c. chopped nuts", "1 (8 oz.) pkg. cream cheese, softened", "2 Tbsp. butter", "1 Tbsp. cornstarch", "1 can sweetened condensed milk"]
["Heat oven to 350\u00b0.", "Grease a 13 x 9-inch baking pan.", "In mixer bowl, beat flour, sugar, 2/3 cup melted butter, cocoa, 2 eggs, milk, 2 teaspoons vanilla and baking powder until well blended. Stir in nuts.", "Spread in pan."]
["flour", "sugar", "butter", "cocoa", "eggs", "milk", "vanilla", "baking powder", "nuts", "cream cheese", "butter", "cornstarch", "condensed milk"]