Preheat oven to 350 degrees. Spray a square brownie pan with nonstick spray.
In one bowl add first 6 dry ingredients and whisk to combine.
In a separate bowl beat egg, add bananas, vanilla, oil, applesauce and yogurt, combining well.
Add the wet to the dry ingredients and gently stir until just combined.
In a blender or mini food processor, puree 1 cup raspberries and stir in 1 teaspoon of stevia/sweetener.
Pour 1/2 of batter into brownie pan and distribute evenly.
Add raspberry puree on top and spread evenly over 1st layer of batter.
Add remaining batter and gently spread over raspberry puree.
Top batter with fresh raspberries, pressing them in gently so they won’t move around.
Bake for 25-28 minutes or until a toothpick inserted in the middle comes out clean. Don’t overcook!
Let pan cool on a rack, remove and slice into 16 squares.