There are a couple of methods to reheat cheese blintz. You can microwave the blintz by covering it with a damp paper towel and heating for 15 seconds on high. The way I prefer is to reheat them in a skillet with a little bit of cooking spray, coconut oil, or butter. Use medium heat and turn them as needed. They will not take a long time to reheat, so you will want to pay close attention to them, so they don’t burn. Lastly, you can bake the cheese blintz at 35º F for 10 - 15 minutes if they have been frozen. If they are thawed, it will only take 5-10 minutes in the oven.