Brookies

I made this recipe once before and my family loved it.  Brookies are chocolate chip cookies and brownies made in the same pan.  I made them like cupcakes.  The first time I made them, I used boxed brownies and boxed chocolate chip cookies.  I changed the recipe the second time by using already prepared chocolate chip cookie dough.

This recipe makes 24 Brookies.  I placed 24 cupcake liners in two pans.

I prepared the brownie recipe according to the directions on the box.  I poured the brownie mix halfway in each liner.

Then I took the cookie dough and cut them into 24 slices and placed them on top of the brownie mix.

I preheated my oven to 350 degrees.  I put the timer on for 30 minutes.  Checking frequently because I didn't want the cookies to burn.  You will definitely need to place a toothpick in to check if the brownie is done.  If the toothpick comes out clean, take the Brookies out immediately.  You do not want to overcook them.

This is a picture of how my Brookies turned out.  The cookie should extend the entire cupcake, but mine didn't.  In fact, only 4 of the 24 did.

Any suggestions how I could make the cookie extend the entire cupcake?