- Into a mixing bowl addflour, coffee, baking powder, salt, and sugar. Addbutter into the dry ingredients with a fork or pastry blender.
- In a separate bowl combine egg with milk; add to flour mixture. Stir until mixture is well blended and smooth. Spoon into a greased and floured 9-inch layer pan. Spread dough evenly. Brush top of dough with melted butter.
- Combine sugar, flour, and cinnamon; sift over the top of the cake, spreading with a fork to cover dough evenly.
- Bake at 400deg; for 25 to 30 minutes.
Cut coffee cake in wedges, serve warm from the pan.