The tater tots that top this casserole won't get super crispy but they will crisp up. Because the tots are placed on a layer of cheese, the cheese acts as a little bit of a barrier from the moisture in the meat mixture below. If you would like the tater tots to be super crispy you can take the stoneware insert out of the heating base and place it under the broiler in your oven for just a few minutes (double check that you insert is oven safe).