To prepare a diamond walnut raspberry brownies baked goods recipe, first you need to gather your ingredients. First, you will need: 1 1/2 cups granulated sugar, 1/2 cup margarine, 1 tablespoon vanilla extract, and 1 teaspoon salt. You will also need 3 tablespoons cocoa powder, 2 teaspoons baking soda, 1/4 teaspoon baking powder and 1/2 teaspoon cinnamon. Then, add the dry ingredients to the wet ingredients and mix until the ingredients are evenly combined. Now, pour the batter into the greased and floured muffin tin and bake for 20 to 25 minutes or until toothpick inserted in the center comes out clean. Allow to cool before cutting into squares.