This is one of our favorite sides for mexican at home. Its super easy and so much tastier homemade! This recipe comes from Eat at Home.
3 tablespoons butter
2 cans kidney beans
1 small onion
1-2 garlic cloves
1 can chopped green chilis
about 1 cup tomato sauce (8 oz can)
Melt the butter in a skillet. Cook the onion and garlic in the butter until soft. Add the beans to the skillet and mash them with a fork. Stir in the chopped green chilis and tomato sauce. Heat until hot and bubbly.