Muffins have always been one of my favorite breakfasts, especially in the fall. Packing them with good-for-you ingredients makes the indulgence a little less guilty as well. These are great for energy and for keeping you alert and focused!
Preheat oven to 400 degrees. Prepare muffin tray by greasing cups (alternatively, line with muffin liners).
In a large bowl combine 1 1/2 cup flour, 3/4 cup sugar, salt, baking powder, and 1 teaspoon cinnamon, and stir. Mix in oil, egg, and milk. Fold in apples and walnuts. Spoon batter into muffin cups, filling to the top of the cup.
In another bowl, combine 1/2 cup sugar, 1/3 cup flour, butter, and 1 1/2 teaspoons cinnamon, and stir. Mix together and pour evenly over unbaked muffins.
Bake for 20-25 minutes.