Preheat the oven: Set it to 375°F (190°C). Line a muffin tin with paper liners or grease it well.
Mix dry ingredients: In a bowl, whisk together flour, cocoa powder, baking powder, and salt until fully combined.
Combine wet ingredients: In another bowl, whisk melted butter, granulated sugar, brown sugar, eggs, milk, and vanilla until smooth.
Mix it all together: Slowly fold dry ingredients into wet ingredients. Don’t overmix unless you like tough muffins.
Add melted chocolate: Stir in the melted dark chocolate for that rich, fudgy texture.
Toss in the chocolate chips: Mix them in gently, but save a few for the tops. Presentation matters.
Fill the muffin cups: Spoon batter into the liners, filling them about ¾ full. No overflowing disasters today.
Bake: Put them in the oven for 20 minutes or until a toothpick comes out with a few moist crumbs.
Cool & eat: Let them sit for 5 minutes before removing from the tin. Eat one warm because self-control is overrated.