Throwback Thursdays: Single-Serving Coffee[cup]cake

Ingredients

• 2 tablespoons all-purpose flour
• 1 1/2 tablespoons granulated sugar
• 1/4 teaspoon baking powder
• A pinch of salt
• 2 tablespoons unsalted butter, melted
• 2 tablespoons milk
• 1/2 teaspoon instant coffee granules (adjust to your preferred strength)
• 1/4 teaspoon vanilla extract
• Whipped cream (optional, for topping)
• Chocolate shavings (optional, for garnish)