Balsamic Portobello Steak Infusion

August 7, 2019

Infuse your portobello mushrooms with mucho umami for a versatile and satisfying dish that will please your friends—even if they eat vegan and/or keto! Makes enough infusion for four large cleaned & trimmed portobello mushroom caps. (Vegan / Keto / LCHF)

Balsamic Portobello Steak Infusion

Category: Entree

Cuisine: Vegetarian

Servings: 4 servings



  • 4 large portobello mushrooms
  • 1 tsp olive oil
  • Garlic cloves, smashed (as desired, optional)
  • Herb sprigs (desired varieties, optional)
  • ¼ cup Udo’s Oil
  • 2 Tbsp soy or tamari (we used liquid aminos)
  • 1 tsp balsamic vinegar
  • 3 tsp garlic
  • 2 tsp cumin powder
  • ½ tsp Worcestershire sauce
  • Salt and fresh cracked pepper to taste


  • Preheat barbecue or oven to 375 degrees.
  • Clean or trim mushrooms as needed. Massage ¼ tsp of olive oil onto each mushroom.
  • Place mushrooms on a rimmed tray, gills up. Add smashed garlic cloves and herb sprigs to the pan, if desired. Roast for 12-14 minutes.
  • Meanwhile, mix all infusion ingredients until combined.
  • Spoon the infusion over the mushrooms and into their gills. Let sit to soak up the flavor and top with salt and pepper.

Portobello Steak Serving Suggestions

  • Roast herbs and garlic alongside the mushrooms. 
  • To serve as vegan burger patties for 4, tuck the mushroom caps in between toasted buns. Serve with salad.
  • For a clean vegan keto meal option, serve on a bed of greens topped with fresh avocado salsa to serve 2 (depending on your appetite).
  • For 2 hungry folks on an omnivorous keto diet, you can treat them as burger buns and stuff them with wild or grass-fed meat patties.
  • We went all out and made a cream sauce for topping:
    • ¼ cup sour cream
    • 2 Tbsp Udo’s Oil
    • 3 Tbsp chopped sage leaves 
Dana Green Remedios, RHN, RNCP, NNCP, is a Vancouver-based educator and coach. She is a regular contributor to the FloraHealthy blog and can answer your questions in English, French, and Spanish as a Product Information Specialist at Flora.

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