Knead the flour, sugar, nuts and butter with your hands to create a crumble mixture. Mix in a little cinnamon to taste. Bake on a baking sheet at 180 ° C for approx. 10-15 minutes until golden brown.
Let cool slightly and fill glasses with it 2 - 3 cm high. Spread a layer of yogurt on top, then washed blueberries. Then again crumb mass, yoghurt and blueberries.
Looks professional and is easy to use, also good for buffet preparation.