Preheat the oven to 350°F

Beat the butter and sugar until it’s well mixed.

Add the milk and lemon juice and stir until mixed.

Add flour, cocoa powder, vanilla extract and baking powder and stir to a smooth batter.

Divide the batter into 12 pieces of muffin molds filled to ¾.

Bake for 15-20 minutes, use a test stick to see if they’re ready, the test stick should come out clean.

If you used a muffin tin, allow the muffin to cool for about 5 minutes and then remove to cool completely. If you leave them in the hot tin they may become dry.