Mushroom Beef Burger

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A close up of a person holding a mushroom beef burger. It's a burger patty coated in melted cheese on a sesame bun

Are you ready for the juiciest, most flavorful burger you’ve EVER had?? Looking to reduce your consumption of red meat in the process? If so, look no further than this incredible mushroom beef burger!! We started experimenting with this in our household last summer and now we really have it dialed in. Not only is this burger delicious, you can make the patties ahead of time and grill them up quickly when you get home from an adventure, or take them car camping and cook them over a fire! I’m picky about burger buns, and these are my favorites (but you should use whatever burger bun you want!) The mushroom beef burger goes really well with grilled asparagus, or a salad,


Mushroom Beef Burger

A close up of a person holding a mushroom beef burger. It's a burger patty coated in melted cheese on a sesame bun

The mushroom beef burger is the juiciest and most flavorful burger EVER with a mixture of mushrooms and ground beef.

  • Author: Jennie Flaming
  • Prep Time: 10 minutes
  • Cook Time: 15 minutes
  • Total Time: 25 minutes
  • Yield: 4 burgers 1x
  • Category: Main dish
  • Method: Grill
  • Cuisine: American


1 pound ground beef (80% or 85% lean)

10 oz mushrooms (sliced or whole)

1/4 cup oats

2 Tablespoons steak seasoning (you can adjust this amount to taste)

1 egg

4 Burger buns

4 slices of cheese (optional)

Any toppings you want! (guacamole is really good on this burger! But also any other condiments or toppings you like)


1. Chop the mushrooms in a food processor (if you don’t have one, you could chop them finely with a knife, but the food processor makes it easy)

2. Mix the ground beef, mushrooms, egg, oats and steak seasoning in a bowl

3. Divide the mixture into four balls, this flatten them into patties (try to make the middle a bit thinner than the outside, this helps them stay flat during grilling)

4. Heat up the grill, then adjust to medium heat setting. Place the burgers gently on the grill (be careful not to push them down with the spatula as these will not be as firm as burger patties you buy commercially).

5. Cook the burgers for about 8 minutes, then flip

6. Cook the burgers an additional 5 minutes, then add the cheese and cook about three more minutes

7. Remove burgers from grill, place on buns and serve with condiments!


Grills very widely in their heat and efficiency, so you may need to adjust the cooking time to fit your grill, or to your preference for more or less cooked burgers.

These freeze really well!

Keywords: mushroom beef burger, grilling

A close up of a person holding a mushroom beef burger. It's a burger patty coated in melted cheese on a sesame bun. Text reads: How to make the best mushroom beef burgers
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Jennie Flaming
Jennie Thwing Flaming, Chief Adventure Officer: Jennie's life has been a continual quest for adventure (of the non-adrenalin inducing kind) from birth till now. Professionally, she pursues adventures in teaching, counseling and working to obliterate institutional racism for students in our region's public schools and also works as a tour and hiking guide. Previous professional adventures include working in schools in Seattle and Alaska, leading tours and managing tour guides and presenting traveling science shows and lessons with Pacific Science Center. She believes in sharing her beloved Pacific Northwest home with visitors. She likes to be outdoors and spend time with the people she loves. Jennie is born and raised in Seattle and has also lived in Alaska and the Netherlands.