Simple recipe, you can thank me later...
1 bottle of Italian dressing
add a dash of meat tenderizer
add 1/4 to 1/2 cup of grated Parmesan cheese depending on how much meat you have...
Put your meat and ingredients in a large ziploc freezer bag. Make sure it is mixed up well... best to put it in the fridge the night before and then cook for lunch time over an open flame... if you're going to do it the same day, put it together first thing in the morning and let it sit in the fridge for 2-3hrs before use...
Enjoy!