Ingredients
Method
- Preheat the oven to 350 F. Line a 12 cup muffin pan with paper liners. In a large bowl, mix together butter, brown sugar, eggs, and vanilla extract until smooth. Add in the flour, salt, and baking powder until smooth.
- Evenly divide the batter between two bowls. Mix blue food coloring into one bowl and green into the other. Evenly divide both batters into the paper liners. Swirl with a knife. Bake for 12-15 minutes.