Equipment
Ingredients
Main Components
- 120 g sourdough bread, cut into 2 thick slices
- 250 g chestnut mushrooms, thickly sliced
Aromatics and Fats
- 30 g unsalted butter, divided into two portions
- 15 ml olive oil
- 1 garlic, finely minced
- 2 fresh thyme, leaves picked from stems
- 2 g sea salt
- 1 g black pepper, freshly cracked
- 5 ml lemon juice, freshly squeezed
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 362 kcal
- Protein
- 9 g
- Carbohydrates
- 35 g
- Fat
- 20 g
- Fiber
- 3 g
- Sugar
- 3 g
- Sodium
- 1055 mg
- Saturated Fat
- 9 g
- Monounsaturated Fat
- 9 g
- Polyunsaturated Fat
- 1 g
- Cholesterol
- 32 mg
- Potassium
- 584 mg
- Calcium
- 34 mg
- Iron
- 0.7 mg
- Magnesium
- 14 mg
- Phosphorus
- 158 mg
- Zinc
- 1.4 mg
- Vitamin A
- 104 mcg
- Vitamin C
- 2 mg
- Vitamin D
- 0.1 mcg
- Vitamin E
- 1.5 mg
- Vitamin K
- 6 mcg
- Vitamin B6
- 0.2 mg
- Vitamin B12
- 0.1 mcg
- Thiamin
- 0.13 mg
- Riboflavin
- 0.62 mg
- Niacin
- 4.8 mg
- Folate
- 33 mcg
- Water
- 121 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Wipe the mushrooms clean and slice them thickly. Mince the garlic and pick the fresh thyme leaves from their woody stems.
Place a large frying pan over medium-high heat. Add the olive oil and half of the unsalted butter, allowing the butter to melt until it begins to foam.
Add the sliced mushrooms to the pan in a single, even layer. Leave them completely undisturbed for 3 minutes to allow a deep golden crust to form on the bottom.
Toss the mushrooms, then add the remaining butter, minced garlic, and fresh thyme. Cook for an additional 2 minutes, stirring frequently until the garlic is fragrant and the mushrooms are fully tender.
Remove the pan from the heat. Season the mushrooms with sea salt, freshly cracked black pepper, and an optional squeeze of fresh lemon juice to brighten the rich, earthy flavors.
Toast the thick slices of sourdough bread until they are golden brown and crisp on the edges.
Pile the warm, buttery mushrooms generously over the toasted sourdough. Pour any remaining garlic and herb pan juices directly over the top to soak into the bread. Serve immediately.
Chef's Notes
- Never wash mushrooms under running water. They are highly porous and act like sponges, absorbing liquid which ruins their ability to sear properly. Wipe them clean with a lightly damp paper towel instead.
- Resist the urge to stir the mushrooms immediately after adding them to the hot pan. Letting them sit undisturbed is the primary secret to developing a rich, savory, caramelized crust.
- Salt draws out moisture through the process of osmosis. Only season your mushrooms at the very end of cooking to ensure they brown perfectly rather than sweating prematurely in the pan.
- For an extra layer of punchy, aromatic flavor, lightly rub the surface of your freshly toasted sourdough with a halved raw garlic clove before spooning on the cooked mushrooms.
Storage
Refrigerator: 2 days — Store cooked mushrooms separately from bread to prevent sogginess. Reheat in a pan.
Troubleshooting
Mushrooms are pale, grey, and soggy instead of deeply browned.
Cause: The pan was crowded or the heat was too low, causing the mushrooms to steam in their own released moisture rather than sear.
Fix: Carefully pour off the excess liquid from the pan, increase the heat to high, and add a drop more oil to initiate searing.
Prevention: Use a sufficiently large pan to ensure mushrooms sit in a single layer. Ensure the pan and oil are hot before adding them.
Cultural Context
Mushrooms on toast is a beloved staple of British cafe culture and an iconic component of a rustic weekend breakfast spread. Historically championed as a cheap, hearty, and locally available ingredient, mushrooms provide a dense, meaty texture that pairs perfectly with robust artisan breads. The dish embodies the elegance of culinary simplicity, relying entirely on the quality of the butter, bread, and mushrooms to deliver immense comfort and flavor.
