01 -
Preheat the oven to 390°F (200°C).
02 -
Gently clean mushrooms with a damp cloth and remove the stems, reserving the stems for the filling.
03 -
Brush mushroom caps lightly with olive oil and arrange them gill-side down on a baking sheet. Roast for approximately 15 minutes, turning halfway through.
04 -
Crush the whole garlic clove with a generous pinch of coarse sea salt and a pinch of dried rosemary (if using) to create a paste. Blend with 2 tablespoons olive oil to form a fragrant garlic oil.
05 -
Finely dice reserved mushroom stems. Warm 1 tablespoon olive oil in a skillet over medium heat. Sauté shallots until nearly translucent. Add diced garlic, sage, rosemary, thyme, nutritional yeast, ground black pepper, and a pinch of sea salt. Stir for 1 minute until aromatic.
06 -
Stir in diced mushroom stems and cook until softened and moisture is mostly released.
07 -
Lower oven temperature to 340°F (170°C). Collect any juices from the roasted mushroom caps and blend with white miso paste; add this mixture to the filling. Incorporate lemon zest and lemon juice. Mix in panko breadcrumbs and pine nuts or walnuts, stirring well. Drizzle in 1 to 2 tablespoons olive oil, mixing until the stuffing is moist and cohesive but not wet. Taste and adjust seasoning as needed.
08 -
Brush the insides of each mushroom cap with garlic oil. Generously pack the caps with the prepared filling. Arrange on a baking sheet.
09 -
Bake the stuffed mushrooms for 15–20 minutes at 340°F (170°C) until golden-brown and aromatic.