Ingredients
Method
- Heat oven to 350°F (175°C); parchment-line sheet.
- Cream butter and 3/4 cup sugar light; beat in egg, vanilla, and banana.
- Whisk flour, cream of tartar, baking soda, and salt; fold into wet just until combined.
- Mix 2 tsp cinnamon and 2 tbsp sugar in shallow bowl; roll 2-tablespoon portions in mixture.
- Place 2 inches apart; slightly palm-flatten. Bake 10–12 minutes until edges set and centers soft.
- Cool on pan 5 minutes; transfer to rack to finish cooling.
