STEP 1/5
Put the dark chocolate and salt-free butter together in a bowl and melt completely by microwave for 20 seconds.
STEP 2/5
Put the eggs, sugar, and salt in another bowl and mix well with a hand mixer.
STEP 3/5
Add melted chocolate and butter, then sift together the soft flour and cocoa powder and mix. Add 1/2 of the chocolate chips and mix.
STEP 4/5
Put the dough in a muffin mold with parchment paper, put the chocolate chip on it, and bake it in a 170-degree oven for 15 to 20 minutes.
STEP 5/5
Remove from mold and cool completely in cooling net.
[Preparing tools]
Ball, sieve, hand mixer, 6-hole muffin frame, parchment paper, piping bag