Ingredients
Equipment
Method
Prep
- Preheat the oven to 350F and grease a 9x5-inch loaf pan, leaving no dry spots on the corners.
- Beat the eggs and granulated sugar together until pale and creamy, then mix in the melted butter, milk, and vanilla extract.
- Whisk together the all-purpose flour, baking powder, and salt, then fold into the wet mixture until just combined.
- Fold in the diced apples with a rubber spatula until evenly dispersed through the batter.
Swirl and bake
- Combine the softened butter, granulated sugar, and cinnamon for the cinnamon swirl until it forms a thick, spreadable mixture with visible specks.
- Spoon two-thirds of the batter into the pan, dollop with half the cinnamon swirl, add the remaining batter, then top with the rest of the swirl.
- Marble the loaf with a knife by making 3-5 gentle swirls through the top layer and down slightly into the batter.
- Bake for 35-45 minutes at 350F, until golden and a toothpick comes out clean or with a few moist crumbs.
Notes
Pro tip: Dice apples small and uniform so they soften evenly and distribute without sinking. Store tightly wrapped at room temperature up to 2 days or refrigerated up to 5 days; freeze slices up to 2 months. For a lighter option, replace half the granulated sugar with light brown sugar substitute if your label allows 1:1.
