Cream butter and sugar with a handheld mixer until fluffy. Add the dry ingredients and mix, alternating with milk.
Put batter in a buttered 8x8-inch pan. Place sliced peaches and blackberries on top of batter then squeeze ½ orange on top. Sprinkle generously with cinnamon sugar.*
Bake for 40-45 minutes or until golden on top. Serve immediately or cool and refrigerate until ready to serve.
Notes
The batter goes on the bottom and then rises up and overtakes the fruit, enveloping them in caked out goodness!