Knead a shortcrust pastry from the first 6 ingredients, roll it out on a smaller baking sheet size approx. 30 x 25 cm and place on the greased sheet and press down, pull up a little bit - spread the jam.
Make sprinkles and pour over them and bake at 170 ° for about 25-30 minutes.
For the crumble, mix all the ingredients well with a fork until the crumble forms (fine and coarser crumbles).