Apple Cinnamon Muffins

Directions

1. Preheat the oven to 425° F.
2. Line a 12-cavity muffin pan with muffin/cupcake liners.
3. In large mixing bowl, use a hand mixer to cream together the butter, brown sugar, and vanilla extract on medium-high speed for 1-2 minutes, or until smooth and combined. Add the eggs and beat for a minute longer, until the mixture is pale and fluffy. Add the sour cream and milk. Continue to beat until fully incorporated, scraping down the sides of the bowl with a rubber spatula.