Cinnamon apple muffins hit that sweet spot between snack and treat: soft, packed with real apple, and sturdy enough for a lunchbox, with a simple cinnamon-sugar topping.
120mlbuttermilkat room temperature (or 1/4 cup milk + 1/4 cup plain yogurt or sour cream)
60mlneutral oilcanola, sunflower, or light olive oil
60gunsalted buttermelted and cooled
2large eggsat room temperature
1tspvanilla extract
Apple
1largefirm applepeeled and finely chopped (about 180 g / 1 1/2 cups; Honeycrisp, Gala, Pink Lady, or Granny Smith)
Cinnamon sugar topping
2Tbspgranulated sugar
1tspground cinnamon
Instructions
Preheat and prep the pan. Preheat your oven to 375°F (190°C). Line a 12-cup muffin tin with paper liners, or grease each cup lightly with butter or nonstick spray.
Whisk the dry ingredients. In a medium bowl, whisk together the flour, sugar, baking powder, baking soda, salt, and cinnamon until everything looks evenly speckled with spice.
Combine the wet ingredients. In a separate large bowl, whisk the buttermilk, oil, melted butter, eggs, and vanilla until smooth and unified.
Fold in the chopped apple. Add the finely chopped apple to the wet mixture and stir to coat.
Bring the batter together. Tip the dry ingredients into the bowl with the wet ingredients. Fold gently until you no longer see dry flour; the batter will be thick and a bit lumpy. Do not overmix.
Portion the batter. Divide the batter evenly among the 12 muffin cups.
Mix the cinnamon sugar topping. In a small bowl, stir together the sugar and cinnamon until evenly mixed. Sprinkle about 1/2 teaspoon over each muffin, using it all.
Bake. Bake on the center rack for 16–20 minutes, until the tops are puffed and lightly golden and a toothpick inserted in the center comes out with just a few moist crumbs.
Cool just enough. Let the muffins cool in the pan for 5 minutes, then lift them out to a wire rack.
Pack or store. Cool completely before packing in lunchboxes or freezing.