Chocolate Whoopie Pies | Blue Flame Kitchen

Ingredients

• ​1 cup milk (2%)
• 1 tbsp pure white vinegar
• 2 cups all-purpose flour
• 1/2 cup unsweetened cocoa powder, sifted
• 2 tsp ground ginger
• 1 tsp baking soda
• 1 tsp salt
• 1/2 cup salted butter, softened
• 1 cup packed dark brown sugar
• 1 large egg
• 1 tbsp grated lemon peel
• 1 tsp vanilla
• 8 oz (250 g) cream cheese, softened
• 1/4 cup salted butter, softened
• 1 tbsp fresh lemon juice
• 1 cup icing sugar
• 1 tsp grated lemon peel
• 1 tsp ground ginger