1/2 C. brown sugar
1/4 C. granulated sugar
2 T. dark chili powder
2 T. paprika
1 T. dry Mexican oregano
1 T. dry thyme
1 T. dry sweet basil
2 tsp. dry mustard
1 tsp. cayenne pepper
2 T. granulated garlic

Mix all ingredients together thoroughly. Generously rub on steak and grill as usual.