Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      large         onion -- , chopped
     1/2  pound         chorizo -- , skin removed
   1      4 oz can      chopped green chiles
   2      16 oz cans    refried beans
   1      cup           shredded cheddar cheese
   1      cup           Monterey Jack cheese -- shredded
   1      teaspoon      chili powder -- , or to taste

Preparation:

Crumble chorizo in a large heavy skillet and cook just until the fat starts to gather in the pan. Add onion and cook until onion is transparent; drain. Add remaining ingredients and cook until all is hot and the cheeses are melted. Serve hot with tortilla chips or corn chips.