Recipe(tried): What causes top of bread to collapse

I've read about and confirmed two reasons for the top of bread collapsing. I had this problem and corrected it by doing the following:

The most common is the dough is too wet. It should be dry enough to hold its own shape. If it won't hold its shape and feels real sticky, it's too wet. Use a little less water next time.

The other cause, although less common is using too much yeast. If it still collapses after using a dryer dough, try decreasing the yeast by about 1/2 to 1 teaspoon.