Preheat oven to 350 degrees F and prepare nonstick mini loaf pans with Pam.
Cake
Sift together flour, baking soda, cinnamon, and salt in a large bowl. Set aside.
In a separate bowl, mix together the yogurt and vanilla. Set aside.
Using your stand mixer, beat together butter and sugar until creamy. Add both eggs until well incorporated.
Alternating, add flour mixture, and yogurt mixture until just combined.
Hand mix in finely chopped and peeled apples.
Pour batter into prepared mini loaf pans.
Crumb Topping
Using a fork, mash together sugar, flour, cinnamon, and softened butter until big clumps form.
Sprinkle over each cake and bake in the oven for 30-40 minutes, or until an inserted toothpick comes out mostly clean.
Remove from oven and let set for 5 minutes, then remove each cake from the pan and finish the cooling process on a wire rack.
Powdered Sugar Glaze
In a small bowl, stir together butter, sugar, milk, and vanilla extract until smooth. Let stand for a minute or two to slightly thicken and drizzle generously over warm apple cake. Eat immediately.
Remember not to over mix your batter or you will end up with tough bread.Nutrition information does not include the powdered sugar glaze.Recipe: Slightly adapted from Emeril Lagasse