Lucky Cupcakes | Mama's Cooking

Ingredients

• ***For the cupcakes:***
• 1/4 cup granulated sugar
• 1/4 cup bottled Key lime juice
• 1 large egg plus 1 egg yolk
• 3 tablespoons salted butter, cut into pieces and chilled
• 1 (15.25-ounce) box white cake mix, plus the ingredients called for on the package
• ***For the frosting:***
• 1 stick salted butter, room temperature
• 1 (8-ounce) block cream cheese, room temperature
• 4 cups powdered sugar
• graham cracker crumbs, optional, to taste, for topping
• lime slices, optional, to taste, for topping