Reuben Mushrooms
Roasting drives moisture out of the portobellos and concentrates their smoky marinade. They become a savory bite that holds its own beneath sauerkraut in a hot Reuben.

Recipe link
Prep time10 min
Cook time20 min
Total time50 MINUTES
- Course
- Main Course, Misc
- Cuisine
- Vegetarian Vegan
- Difficulty
- Easy
- Est. calories / serving
- 98
Ingredients
- 2 pounds portobello mushrooms (caps and stems, cut into 1-inch cubes)
- ¼ cup avocado oil
- 2 tablespoons lemon juice
- ¼ cup tamari
- 2 teaspoons granulated onion
- 2 teaspoons granulated garlic
- 2 teaspoons black pepper (coarse, freshly ground)
- 1 tablespoon liquid smoke
Instructions
Instructions
- Prepare the Mushrooms: Preheat the oven to 350°F. Cut the portobello caps and stems into 1-inch cubes and place them in a large mixing bowl.2 pounds portobello mushrooms
- Build the Marinade: In a separate bowl whisk together the avocado oil, lemon juice, tamari, granulated onion, granulated garlic, black pepper, and liquid smoke until well combined.¼ cup avocado oil, 2 tbsp lemon juice, ¼ cup tamari, 2 tsp granulated onion, 2 tsp granulated garlic, 2 tsp black pepper, 1 tbsp liquid smoke
- Marinate the Mushrooms: Pour the marinade over the mushrooms and gently toss until every piece is evenly coated. Let the mushrooms marinate for 20–30 minutes, stirring once or twice.prepared mushrooms, prepared marinade
- Roast Until Tender: Spread the mushrooms into a single layer on a parchment-lined baking sheet. Roast for 15–20 minutes, stirring once halfway through, until the mushrooms are tender and lightly caramelized around the edges.marinated mushrooms
- Serve: Serve immediately, or cool completely before refrigerating for meal prep.
Notes
- Don't Crowd the Pan: Spreading the mushrooms into a single layer allows them to roast instead of steam.
- Marinating Time: Even 20 minutes makes a noticeable difference, but longer is even better.
- Storage: Store refrigerated in an airtight container for up to 5 days.
- Serving Suggestions: Pile onto rye bread with Reuben Sandwich Spread, Homemade Red Cabbage Sauerkraut, Vegan Swiss-style cheese, or serve over Creamy Vegan Mashed Potatoes.
Nutrition (Approximate Per Serving)
Yield
About 6 cups roasted mushrooms — Serving size: ¾ cup
- Calories
- 98
- Carbohydrates
- 7 g
- Protein
- 4 g
- Fat
- 7 g
- Saturated Fat
- 1 g
- Polyunsaturated Fat
- 1 g
- Monounsaturated Fat
- 5 g
- Cholesterol
- 0 mg
- Sodium
- 486 mg
- Potassium
- 486 mg
- Fiber
- 2 g
- Total Sugars
- 2 g
- Vitamin A
- 8 IU
- Vitamin C
- 6 mg
- Calcium
- 12 mg
- Iron
- 1 mg
Equipment
- Large mixing bowl
- Whisk
- Baking sheet
- Parchment paper
- Chef's knife
- Cutting board