Calabacitas (Skillet Squash)

Ingredients

5 cubed small summer squash 
1 diced large onion 
2 roasted peeled green chiles or about 1 small can diced green chile 
1 tablespoon shortening or oil 
3/4 cup shredded longhorn cheese

Instructions

Sauté onion in shortening or oil until soft. Add squash and stir until almost tender. Add chiles; simmer briefly. Sprinkle on cheese and stir until melted.