Start by heating a skillet on medium heat. Add in the butter and swirl the skillet as it begins to melt.
Add in sliced Polish sausage. I like to heat the sausage through while trying to get a slight crisp to it along the way.
Turn the sausage and try to lightly smash it so it flattens. Scoot the sausage to the edge of the skillet.
Crack the egg into the skillet and cook the egg to an over easy yolk. While the whites of the egg are almost set, top the egg with the slice of American cheese.
Pop you bagel into the toaster and toast until light golden brown.
Once the bagel is ready, take the bottom bagel and top with the egg and cheese. Add the Polish sausage on top, and add the top bagel. Smash slightly to get the yolk gravy going, then dig in.