Definitely! This recipe is definitely a waiting game and there are shortcuts to be had. If you would rather save time and not wait for the freezing, make the frosting while the brownies set and spread it on after you pull them out. I only call for a thin layer of frosting center (trust me, I tried a thicker one, it was just overkill). If you're putting it on top, though you may want more. Bump the cream cheese up the whole 8-ounce block, the butter up the 1/4 cup and the sugar up to 1 1/2 cups for a larger batch. Another word of caution is that I don't know how cooking these brownies without the center will affect the cook time, so keep an eye on them early - like the 25-minute mark, to make sure they aren't overcooking without that extra layer of moisture in the center.