Preheat Oven & Prep Ingredients: Preheat to 350°F (175°C). Line a muffin tin with liners.
Make Batter: Cream butter and sugar. Mix in dry ingredients alternately with milk and hot chocolate.
Bake: Fill liners 2⁄3 full. Bake for 18–20 minutes. Cool completely.
Prepare Buttercream: Beat butter and sugar, adding cream and vanilla until fluffy.
Make Fudge Drizzle: Heat cream, pour over chocolate chips, stir until smooth.
Assemble: Frost cupcakes, drizzle fudge, and garnish as desired.
Enjoy your cozy cupcakes!