STEP 1/15
[Crumble] Sieve flour and almond powder in a bowl and add sugar.
STEP 2/15
Mix evenly with a whisk.
STEP 3/15
Add the cold butter, 1cm square.cm squares.
STEP 4/15
Mix, finely chopping with scraper.
STEP 5/15
If the butter is about the size of a red bean grain, rub it with your palm or hold it tightly because there is no moisture, and if you tap it, it clumps up finely.
Place the finished crumble in the refrigerator until used.
STEP 6/15
[Cake] In a bowl, gently beat the soft butter, then add the sugar and mix thoroughly (you may mix with a regular whisk).
STEP 7/15
Add beaten eggs little by little and mix well.
STEP 8/15
Add the nutella and mix well.
STEP 9/15
Sift together the flour, baking powder and cocoa powder and add milk and vanilla extract.
STEP 10/15
Mix until powdery and add chocolate chips.
STEP 11/15
Mix evenly to complete the dough.
STEP 12/15
Apply melted butter to the muffin mold to use.
STEP 13/15
Put 2T of cake batter each and arrange the top side flat.
STEP 14/15
Sprinkle the crumble just enough to cover the cake dough and trim it flat.
STEP 15/15
Bake in a preheated oven at 170 for about 25 minutes.