Carmelize the onions in a separate pan - 30 - 35 minutes
When the onions have been cooking for about 15-20 minutes, add the sausage to a pot on on medium high. Cook the sausage through, breaking up with a wooden spoon 5-8 minutes. Once browned add the peppers and cook for another 5-10 minutes.
Add the beer to the pot, bring to a boil on high and then simmer at medium for 8-10 minutes to reduce the beer.
Add the cheese, beans, tomatoes. Reduce heat to low and allow the cheese to melt- 2-4 minutes. Stir constantly as the cheese melts
Once the onions have caramelized serve the queso garnished liberally with the onions and more cilantro.