12ounces vanilla yogurt(or plain yogurt with an additional 1/4 cup brown sugar plus 1 teaspoon vanilla extract)
1cupfinely chopped apple, peel removed
1/4cupold-fashioned oats
For the Streusel Topping:
1/2cupspelt or whole wheat flour
1/4teaspoonsalt
1/3cupbrown sugar
1/4teaspoonground cinnamon
1/4cupbutter, at room temperature
Instructions
Preheat the oven to 375 degrees F. Butter a 12-cup regular muffin pan or a 6-cup jumbo muffin pan (for these muffins I prefer the jumbo size).
In a medium-sized bowl, combine the flour with the salt, baking soda, baking powder and cinnamon. Set aside.In a large mixing bowl beat together the eggs, brown sugar, oil and vanilla extract until combined then add the yogurt. Gradually stir in the flour mixture then stir in the oats and apples before the mixture is completely combined. Be careful not to over-stir or the muffins will be heavy and dense.Spoon the batter into the muffin cups, filling them just barely over the 3/4 full mark.
Make the streusel topping: Combine all the ingredients in a bowl and work with your fingers to make crumbles.Sprinkle the streusel over each muffin. Bake on the middle rack for 22-25 minutes or until a toothpick inserted into the center of a muffin comes out clean. Let the muffins sit for a couple of minutes before carefully removing them from the pan.Best eaten warm.