I made this tonight, adding about a tsp of dill weed and 1/2 tsp each of onion and garlic powder. "Medium Bowl" wasn't sufficiently descriptive, so I measured the capacity of a standard loaf pan by filling it with water (2 qts) and then did the same with my various bowls. An old Pyrex bowl was a perfect fit.
The bread was delicious; I lopped off the top and chunked it up, then scooped/pulled out much if the insides and chunked that up too. I filled it with a double recipe of spinach herb dip. It was a big hit with my guests.
My only two issues (hence four not five stars) were 1) the lack of specificity on the bowl size, and 2) the bread from the inside didn't have enough body to dip; the crusty pieces were fine, but not the others.