Keto Whoopie Pie (Brownie Cookies + Fluffy Frosting = Keto Dessert Win!)

Ingredients

• 4 tablespoons butter, melted
• 1 whole egg
• 1 egg white
• 2 ounces cream cheese, softened
• 2 teaspoons vanilla extract
• 1 teaspoon monk fruit sweetener drops
• 6 tablespoons almond flour
• 1/4 cup + 2 tablespoons Swerve granular
• 1/4 cup unsweetened cocoa powder
• 1/4 teaspoon baking powder
• 1/4 teaspoon xanthan gum
• 1/4 teaspoon salt
• 1/2 cup butter, softened
• 1/2 cup Swerve confectioners
• 1/2 teaspoon vanilla extract
• 1 teaspoon heaving whipping cream or more