Sandwich Cookies with Chocolate Peppermint Filling | Blue Flame Kitchen

Ingredients

• 2 cups all-purpose flour
• 1/2 cup unsweetened cocoa powder
• 1/4 tsp baking soda
• 1 cup salted butter, softened
• 3/4 cup granulated sugar
• 1 large egg
• 1 tsp vanilla
• 2 cups chopped dark chocolate
• 1/2 cup whipping cream
• 1 1/2 tsp peppermint extract
• 2 cups chopped white chocolate