Hungarian Goulash Inspired Burgers are all the flavor of the classic international favorite but served up in burger form on a potato bun.
Heat a large skillet over medium-high heat.
Once the skillet is hot, add the olive oil.
Add the caraway seeds and marjoram; stir constantly allowing them to bloom or become fragrant.
Add the onions, bell peppers, and garlic; mix well incorporating the seasonings into the aromatics; cook for 3-5 minutes or until they begin to soften.
Add the paprika (reserving the 1/2 tsp for later use), 1/2 tsp salt and pepper, and the parsley; mix well and cook for 2 more minutes.
REMOVE 1/4 cup of this mixture; set aside
Add the beef broth to the remaining mixture in the skillet, pulling up any stuck on bits at the bottom of the pan.
Add the tomato sauce; reduce heat to medium and allow to simmer for 2-3 minutes.
Add the potato flakes ONE tablespoon at a time, mix in fully before adding more. If mixture is super thick after TWO tablespoons, do not add the third, reserve it for possible later use.
Fold in the sour cream, allow the sauce to cook on medium for at least 5 minutes.
If the sauce is too thin, add the remaining tablespoon of potato flakes; if the sauce is too thick, add more beef broth, tablespoons at a time.
Place the ground beef to a large bowl.
Add the reserved spiced onions and pepper mixture.
Add the reserved 1/2 tsp paprika, and the 1/4 tsp salt and pepper.
Mix well but take care to not over mix the meat.
Form 6 - 1/3 lb patties and allow the patties to sit for at least 30 minutes, infusing the spices fully into the ground beef.
Heat grill on high and cook approximately 3 minutes per side or to desired doneness.
Top with gruyere cheese cheese, lettuce, and goulash sauce on a potato bun; serve and enjoy.