Heat the Oven: Start by setting the oven to 350 degrees Fahrenheit. Line a muffin pan with paper liners or lightly grease each cup. This helps the muffins release easily and keeps the edges soft.
Mix the Dry Ingredients: Add flour, baking soda, cinnamon, and salt into a large bowl. Stir well so the spice spreads evenly through the flour. This step helps every muffin taste balanced.
Prepare the Apples: Peel and dice the apples into small pieces. Smaller chunks soften better while baking and blend smoothly into the batter without sinking.
Combine the Wet Ingredients: In another bowl, whisk honey, yogurt, melted oil, egg, vanilla, and milk until smooth. The mixture should look creamy and well blended.
Bring the Batter Together: Pour the wet mixture into the dry ingredients. Stir gently until just combined. Fold in the diced apples with slow movements to keep the batter light.
Fill the Muffin Pan: Spoon batter into each cup, filling about three quarters full. This allows space for the muffins to rise without spilling.
Bake Until Set: Place the pan in the oven and bake for eighteen to twenty two minutes. The tops should feel springy and a toothpick should come out clean.
Cool Before Serving: Let the muffins rest in the pan for five minutes. Move them to a rack so steam escapes and the texture stays perfect.