Line a 9-inch square baking pan with foil and coat with cooking spray.
In a large bowl mix together flour, 1 cup sugar, unsweetened cocoa, baking powder, and salt.
Combine 1/3 cup of Smucker's Natural Blackberry Spread, 1/3 cup water, and butter in a small saucepan; bring to a boil over the stove.
Once it boils, add blackberry mixture to flour mixture and stir well. Add egg and egg white; stir until smooth. Stir in milk chocolate chips. Pour the batter into prepared pan.
Take the other 1/3 of Smucker's Blackberry Spread and drop them by spoonfuls into the brownies. I spooned 9 spoonfuls evenly across the batter. Then with a knife, mix the jam into the batter by moving the knife side to side through the batter until it is well combined.
Bake at 350° for 30 minutes or until a wooden toothpick inserted in the center comes out with a few moist crumbs. Sprinkle powdered sugar on top.