Chocolate Cupcakes with Fluffy Mint Chocolate Chip Buttercream Frosting

INGREDIENTS

1/3 cup

cocoa powder

1/2 tsp

baking soda

1/2 cup

boiling water

1/4 cup

butter (, melted)

2 1/2 tbsp

vegetable or canola oil

3/4 cup

+ 2 Tbsp granulated sugar

3/4 tsp

vanilla extract

1/4 tsp

salt

large egg

large egg yolk

1/4 cup

heavy cream

3/4 cup

+ 2 Tbsp all-purpose flour

3/4 cup

butter (, partially softened** (preferably half salted and half unsalted butter))

1 tsp

mint extract ((don't use peppermint!))

1/2 tsp

vanilla extract

2 1/4 cups

powdered sugar

1 tbsp

heavy cream

Green food coloring ((I used 10 drops))

85 g

semi-sweet or bittersweet chocolate (, finely chopped (1/2 cup))