Preheat oven to 325F, spray a 8 inch square dish and set aside.
Mix your flour, sugar, cocoa powder and baking powder together.
Mix in your eggs, apple sauce, yogurt and vanilla. Fold in chips.
Pour into your dish, batter will be thick, evenly spread it out over your dish.
Melt your peanut butter in the microwave, I usually do it for 2 rounds of 35 seconds, stirring in between. Drizzle 3 lines of the melted peanut butter over your brownie batter and then spread out using a knife.
Bake in oven for 22-24 minutes. Cool then cut into 9 brownies. Each brownie is 5sp or 3pp.
Nutritional info, per brownie.. Calories 125... Fat 2.7g...Saturated fat 1.3g... Carbs 22.6g... Fiber 1.6g... Sugars 9.4g... Protein 4.1g