Preheat Oven & Prepare Pan:

• Preheat your oven to 350°F (175°C).
• Line a 12-cup muffin pan with cupcake liners.

Mix Cupcake Batter:

• In a large bowl, cream together the softened butter and granulated sugar until light and fluffy.
• Beat in the eggs one at a time, then stir in the vanilla extract.
• In another bowl, whisk together the flour, baking powder, and salt.
• In a separate small bowl, combine the grape juice and milk.
• Alternately add the dry ingredients and the grape juice mixture to the creamed butter, stirring until just combined.
• If desired, add a few drops of purple food coloring to enhance the grape look.

Bake:

• Spoon the batter into the cupcake liners, filling each about 2/3 full.
• Bake for 18–20 minutes or until a toothpick inserted into the center comes out clean.
• Remove from the oven and cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.

Prepare Grape Frosting:

• In a large bowl, beat the softened butter until creamy.
• Gradually add powdered sugar, beating until smooth.
• Mix in the grape juice and vanilla extract until you reach your desired frosting consistency.
• If needed, add a drop of purple food coloring for a richer appearance.

Assemble & Serve:

• Once the cupcakes have cooled completely, frost them with the grape frosting.
• Enjoy these colorful, fruity treats!