Preheat oven to 350*F and prepare an 8x8 or 9x9 baking pan with baking spray.
In a small bowl combine flax, water, vanilla and applesauce and stir to combine. Set aside.
In another small bowl, combine peanut butter, agave and salt and stir to combine. Set aside.
In a large bowl, combine earth balance and cocoa powder with a spatula. Add sugar and stir well. Next, add the flax and applesauce mixture. Stir well with a spatula. Next, add flour baking powder and salt and gently fold together until everything is just combined. Next, add ½ cup of chocolate chunks and fold together to distribute.
Transfer brownie batter to a pan and spread out. Onto the brownie batter, distribute dollops of the peanut butter and agave mixture. With a knife or a spatula, swirl the peanut butter into the brownie mixture. Top with the remaining ½ cup of chocolate chunks and using a spatula, gently press them down into the brownie batter.
Bake on the center rack of a 350"* F oven for 35-40 minutes. The edges should be starting to brown. I don’t recommend testing with a toothpick here because you will likely go straight through a chocolate chip wherever you test.
Let cool completely, cut into desired sizes and serve up!