Ingredients
Method
- Heat oven to 350F and line a mini muffin tin with liners.
- Whisk butter, sugar, eggs, vanilla, cocoa, and flour into a smooth batter.
- Spoon the batter into the cups about three-quarters full.
- Add a small dab of peanut butter to each and swirl with a toothpick.
- Bake 15 to 18 minutes until set, then cool before removing.
Notes
A toothpick gives you the prettiest tight little swirls.
