Sarah's Oklahoma Onion Burger


Onion burgers are one of America's greatest regional renditions, but be warned--these are diner style, and prepare for those drops of grease, but don't let it scare you. They're so craveable, you may want to eat a second! You do not want to use anything under an 80/20 fat ratio. If you do, they won't be good.

Prep Time:
10 mins
Cook Time:
15 mins
Total Time:
25 mins
4 onion burgers


  • 2 tablespoons salted butter

  • 1 tablespoon olive oil

  • 1 large onion, very thinly sliced

  • ½ teaspoon granulated garlic

  • 1 pound 85% lean ground beef

  • ½ teaspoon salt

  • 1 teaspoon Hamburger Seasoning

  • ½ cup sliced portobello mushrooms

  • ground black pepper to taste

  • 4 slices Swiss cheese

  • 4 rolls rolls, hamburger, white, enriched, plain


  1. Heat a skillet over medium heat. Add butter and oil; heat until butter is melted. Add onion and garlic. Cook until onion is soft and translucent, about 5 minutes.

  2. Meanwhile, divide ground meat into 4 portions and shape into patties. Season with salt and seasoning.

  3. Heat a large skillet or flat-top over medium-high heat for a few minutes. Place patties into the hot skillet and smash with a spatula or bacon press. Hold patties down for 30 seconds, then cover each patty with some of the cooked onion. Cook for 2 minutes. Carefully flip burgers, making sure to scrape the browned bits off the skillet.

  4. Press down on the flipped patties to sink the onions into the meat.

  5. Meanwhile, add sliced mushrooms to the skillet used for the onion and cook until softened, about 5 minutes.

  6. Season patties with salt and pepper and place a slice of cheese on each. Cook until burgers have reached the desired doneness, 2 to 4 minutes more. Top each patty with leftover onion and mushrooms and serve on buns.

Cook's Notes:

You can use yellow or white onion in this recipe.

Instead of ground beef, you can also use a combination of ground venison or ground bison with ground bacon.

I use a seasoning from Trader Joe's(R) called "21 Seasoning Salute", but feel free to use what you have on hand.

If you like, heat another pan until hot and melt some butter in it to toast the buns before you use them. About 30 seconds should get you a nice toasty brown.

Nutrition Facts (per serving)

569 Calories
33g Fat
31g Carbs
36g Protein
Nutrition Facts
Servings Per Recipe 4
Calories 569
% Daily Value *
Total Fat 33g 42%
Saturated Fat 15g 75%
Cholesterol 122mg 41%
Sodium 770mg 33%
Total Carbohydrate 31g 11%
Dietary Fiber 2g 8%
Total Sugars 2g
Protein 36g
Vitamin C 3mg 14%
Calcium 306mg 24%
Iron 2mg 10%
Potassium 212mg 5%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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