1 1/2cupsblueberries(see notes above for fresh and frozen)
Preheat oven to 350 degrees F and lightly grease an 8x4" or 9x5" loaf pan (see notes)
In a large bowl, mash bananas. Add applesauce, yogurt and sugar and whisk until combined.
Add vanilla and eggs and stir until combined.
Add baking powder, cinnamon, baking soda, salt and flour and stir just until combined (don’t overmix – it doesn’t have to be smooth, just combined). Stir in blueberries, reserving a few to sprinkle on top if desired.
Spread in loaf pan and bake for 50-70 minutes (this will depend on the size of your pan), covering with foil at 40 minutes when the top is golden brown. Continue baking until toothpick inserted in the middle comes out clean (up to about 70 minutes).
*I bake this in an 8x4" glass loaf pan. An 8x4" pan is very full, but makes a nice high loaf. You can also bake in a 9x5" loaf pan, and it will be slightly shorter and bake a little less.*I often use equal parts whole wheat and all purpose flour, but you can use all whole wheat flour or all purpose flour as you want.