Preheat the oven to 350 degrees. Spray an 8-inch baking dish or cast-iron skillet with cooking spray.
Heat the SunButter and strawberry jam in the microwave in 10 second blasts until thin enough to swirl but not hot.
Combine the flour, baking powder, and salt in a large mixing bowl. In another mixing bowl, whisk together the milk, eggs, sugar, and vegetable oil. Add to the dry ingredients and whisk until you have a thick batter. Pour into the prepared dish.
Drop dollops of the SunButter and jam into the batter. Using a knife or skewer, swirls the dollops together.
Bake for 25 minutes or until the batter is set. Dust with powdered sugar and serve.