Cupcakes

• 2-3/4 cups all-purpose flour
• 2 teaspoons baking powder
• 2 teaspoons ground cinnamon
• 3/4 teaspoon salt
• 1/2 teaspoon baking soda
• 1/4 teaspoon ground ginger
• 1/4 teaspoon ground allspice
• 1 cup firmly-packed light brown sugar
• 1 cup (2 sticks) butter, softened
• 3 eggs
• 1 teaspoon vanilla extract
• 1-1/4 cups sour cream

Filling

• 1/4 cup firmly-packed light brown sugar
• 4 teaspoons cornstarch
• 1 teaspoon ground cinnamon
• 1/8 teaspoon salt
• 1/8 teaspoon ground ginger
• 1/8 teaspoon ground allspice
• 1/4 cup (1/2 stick) butter
• 2-1/2 cups peeled, diced honeycrisp or gala apples (from about 3 medium or 2 large)
• 2 tablespoons lemon juice (from 1 small)
• 1/2 teaspoon lemon zest

Cinnamon Buttercream Frosting

• 1/4 cup heavy whipping cream
• 1-1/2 teaspoons ground cinnamon, plus more for garnish (optional)
• 1 cup (2 sticks) butter, softened
• 1/2 teaspoon vanilla extract
• 1/4 teaspoon salt
• 4 cups sifted powdered sugar (confectioners’ sugar)

Tools

• Muffin Pan
• Cooling Grid
• Measuring Spoon
• Electric Mixer
• Medium Bowl
• Large Bowl
• Small Bowl
• Tip 1M
• Decorating Bag
• Knife