Sand Art Brownies 5/8 cup all-purpose flour 3/4 teaspoon salt 1/3 cup unsweetened cocoa powder 1/2 cup all-purpose flour 2/3 cup brown sugar 2/3 cup granulated sugar 1/2 cup semisweet chocolate chips 1/2 cup vanilla chips 1/2 cup walnuts Mix flour with salt. In a clean wide-mouth quart-size jar, layer the ingredients in the order given, starting with the flour and salt mixture and ending with the walnuts. Attach a decorative tag to the outside of the jar with the following directions: Sand Art Brownies Preheat oven to 350 degrees F. Grease a 9-inch square baking pan. Pour the contents of the jar into a large bowl and mix well. Stir in 1 teaspoon vanilla extract, 2/3 cup vegetable oil and 3 eggs. Beat until just combined. Pour the batter into the prepared pan and bake at 350 degrees F for 25 to 30 minutes.