First of all, I made 8 cups because that is how many biscuits were in the can, so I had extra meat. Second, I too had a problem with the biscuits puffing up. So here is what solved the problem. After the 15 min baking time was up, I removed the muffin pan from the oven. With a spoon, I pressed them all down again. Then with the extra meat, topped all the cups off, added cheese and baked for 2 minutes. Problem solved! My family enjopyed the twist on taco night.