Here's Mom's recipe for Mokka Taart (Coffee Cake, sort of) requested by a few people. You can also find it in If I Can Cook It You Can Cook It Cookbook.
300 grams of sugar
200 grams of all-purpose flour (or Silk)
2 pkg. vanilla sugar
Directions: Separate yolk from egg. Mix yolk and sugar together for 20 minutes with an electric mixer. Mix the white with vanilla sugar for 5 minutes and then mix in the flour. Now, gently, by hand, mix all the ingredients together (electric hand mixer is allowed). Bake in oven at 325 F for 40 minutes. Cool on rack. Cut in half only after it's cooled.
Filling for Cake: (Do this the night before.)
Strawberry jam, enough to spread across the whole cake. Add rum to taste and refrigerate.
115 grams of butter or "I Can't Believe It's Not Butter"
Confectioner's sugar (As much as your sweet tooth will allow.)
1 tsp. instant coffee, melted in a little bit of hot water
Rum (optional, but very tasty, unless you're using the jam/rum filling)
Recipe from: If I Can Cook It You Can Cook It Cookbook