I used Granny Smith, but you can use whatever you have on hand.
This recipe is adapted from Two Peas and Their Pod.
Apple Cinnamon Bread
1 1/2 cups flour (add an extra 1/4 cup if high altitude)
1 tsp baking soda (if high altitude, use scant teaspoon)
1/2 tsp salt
2 1/4 tsp cinnamon
1/4 tsp ground cloves
1/8 tsp ground nutmeg
1/4 cup canola oil
1/4 cup applesauce
1 tsp vanilla extract
1 cup sugar
2 cups peeled and chopped apples (1 large apple or 2 small apples)
2 Tbsp butter
1/2 tsp cinnamon
1 Tbsp brown sugar
1 tsp flour
1 Tbsp oatmeal
Preheat oven to 350F. Grease and flour an 8x4 inch loaf pan. Peel and chop the apples.
In a medium bowl, whisk the first six ingredients together.
Beat the eggs on medium speed in a large bowl. Add the oil, applesauce and vanilla and blend until smooth. Add the sugar and mix until well-combined.
Add the flour and mix in on low speed until just mixed. Fold in the apples.
Pour the batter into the pan. The bread will rise while baking so don't fill the pan more than 2/3 full. Use any extra batter you might have to make a couple of muffins.
In a small bowl, cut the butter into the rest of the topping ingredients. Add more sugar, cinnamon or flour as needed.
Sprinkle over the batter in loaf pan.
Bake for 55-65 minutes or until a toothpick inserted in the middle comes out clean.
Cool the bread in the pan for at least 10 minutes, then remove to a cooling rack. Try to cool completely before slicing. Obviously I didn't wait and my loaf crumbled a little but it was oh, so good.