Chocolate Buttercream Frosting (6-Minute Recipe)

Bahan-bahan (12 porsi)

• 1 cup unsalted butter (softened)
• 3 cups confectioners sugar
• 1/2 cup unsweetened natural cocoa powder
• 3 to 4 Tbsp heavy whipping cream (plus more to thin the frosting)
• 2 tsp pure vanilla extract
• 1/4 tsp salt