Preheat oven to 350 degrees and prepare a 12 cup muffin pan. Combine all dry ingredients in a large bowl.
In a separate bowl, combine eggs and sugars and beat until smooth. Stir in orange juice and zest, butter, and vanilla.
Add wet ingredients to the large bowl of dry ingredients and fold gently. Add in grated apples and fold in until just combined.
Evenly distribute batter into 12 cupcake paper liners and bake for 20-25 minutes. Use the toothpick trick to ensure doneness. Let cupcakes cool on a wire rack.
For the caramel buttercream, combine all ingredients in a mixer and beat until smooth. Add more milk as necessary. Frost cupcakes and garnish as desired!
Recipe by at https://www.adventuregathereat.com/apple-cupcakes-with-caramel-buttercream/