Polish Sausage Sandwich - cooking recipe

Ingredients

16 ounces Polish sausage (pre-cooked type) or 16 ounces smoked sausage, sliced on a bias, 1/4-inch thick (pre-cooked type)
2 tablespoons butter
2 tablespoons cooking oil
4 onions, sliced longways
12 ounces beer (not \"lite\")
5 sandwich buns, croissant-type (or toasted bagels)

Preparation

In a no-stick skillet, add the cooking oil and the butter, allowing it to melt over medium heat.
Saute the onions for about 5 minutes.
Add the sausage and allow it to brown a bit, stirring/tossing every minute or so, for 4-5 minutes.
Pour the beer into the mix and allow it to come to a boil.
Lower the heat and allow to simmer for 15 minutes, uncovered.
Serve on croissant rolls or bagels. Add condiments as you wish, such as hot mustard.