Ingredients
Method
- Heat oven to 400°F; line a 12-muffin tin.
- In one bowl, whisk flour, sugar, baking powder, salt, and cinnamon.
- Add egg, milk, oil, and vanilla. Stir until just mixed. Batter will be lumpy.
- Fold in chopped apple gently.
- Make streusel: mix brown sugar, cold butter, and oats with a fork until crumbly.
- Spoon batter into cups. Sprinkle streusel on top.
- Bake 18–22 minutes until tops are golden and a toothpick comes out mostly clean.
- Cool 5 minutes in pan, then move to a rack.
