Chocolate Crumble Coffee Cake Muffins

• 21 muffins
• 20 hand strokes
• 12 directions crumble mixture place of broken chocolate (pieces)
• 6 to distribute butter (seconds into very pieces)
• 1 egg
• 1 egg yolk
• 5/8 full
• 1/4 pecans
• 475 gr directions to marble crumble with dough
• 220 gr unsifted flour