Kielbasa Sandwich with Caramelized Onions and Potatoes

I made this the other day because kielbasa sandwiches remind me of my favorite sandwich place back at home, Primanti Bros.  Their signature sandwich has fries, coleslaw, and tomatoes piled on top of it and my go-to is usually the kielbasa or the colossal fish. Since a Primantis style sandwich wouldn’t be the same outside of Pittsburgh, I decided to go with onions and potato instead.

This sandwich was pretty simple, and I didn’t add any spices or salt since the kielbasa is already salty.

Enjoy 🙂


Recipe: makes one sandwich

  • kielbasa, cut in half lengthwise
  • 1/2 sweet onion, sliced
  • 1 tsp butter
  • 1 medium size yellow potato, sliced thin
  • 1 slice Swiss cheese
  • 2 slices bread


  1. Heat the butter over a large pan over medium/low heat and add the onions. You’ll want to cook it until it’s caramelized, anywhere from 15-25 minutes. If the onions start to dry out, which they probably will, add some water to the pan. I probably added almost 1/2 cup of water in small increments.
  2. When the onions are almost done, add the potatoes and spread them out so they are all touching the pan. After 5 minutes or so, flip the potatoes if they are browned so the other side gets cooked. At this point, you can take the onions out of the pan and set them aside.
  3. Cook the potatoes until both sides are light brown. Take them out when they’re done and turn the pan up to medium/high heat.
  4. Sear the kielbasa for a minute or two on both sides just until they’re a little charred and heated up all the way.
  5. Assemble the sandwich: bread, potatoes, kielbasa, onions, swiss.



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