Peanut Butter Filled Brownies

Batter:
Ghiradelli Brownie mix
1 egg
1/3 cup water
1/3 cup oil
1/2 cup peanut butter chips
1/2 cup chocolate chips

Filling:
4 T melted butter
1/2 cup powdered sugar
3/4 cup smooth peanut butter
1/4 tsp salt
1/2 tsp vanilla

Heat oven to 325 and grease a 9x9 pan

Mix batter ingredients until powder is incorporated.
For filling whisk together all ingredients until smooth.

Spread one third of the batter into the bottom of the pan. Place dollops of filling an inch apart on the batter. Add the remaining batter to the pan and spread over dollops. Evenly line out the remaining filling and run a spatula perpendicular to the filling.

Bake for 45 minutes.