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Some mornings call for something more interesting than cereal but still fast enough to finish before coffee gets cold. This sourdough toast piles warm garlicky mushrooms over creamy lemony avocado, and the whole thing lands on the table in about fifteen minutes.
I started making this when I had half a ripe avocado and a few mushrooms left over from dinner. The sourdough adds a chewy tang that holds up to the juicy toppings way better than soft sandwich bread ever could.
What goes on the bread
Quality matters here because the ingredient list is short. Pick mushrooms that are dry and firm with a woodsy smell, and use a ripe avocado that yields to a gentle squeeze. A good loaf of sourdough with a sturdy crust makes the difference between crisp toast and soggy bread.
- Cremini mushrooms. These brown mushrooms cook down savory and meaty with deep umami in just a few minutes.
- Extra virgin olive oil. Helps the mushrooms sear and carries the garlic flavor across every slice.
- Fresh garlic and thyme. Garlic perfumes the oil while thyme adds an earthy note that pairs with mushrooms.
- Tamari. A splash brings salt and a subtle fermented depth. Soy sauce works if gluten is not a concern.
- Ripe avocado. The creamy base that cools the warm mushrooms and adds richness.
- Lemon juice. Keeps the avocado green and adds a bright contrast to the savory topping.
- Thick sourdough slices. The sturdy crumb and chewy crust stay crisp under juicy toppings.
How to build it
- Sear the mushrooms. Heat olive oil in a skillet over medium-high heat. Add the sliced mushrooms in a single layer and cook without stirring for 3 to 4 minutes until one side is deeply golden. Toss and cook 2 to 3 minutes more until tender and reduced. Stir in the garlic, thyme, tamari, and red pepper flakes. Cook for 30 seconds until fragrant, then remove from heat.
- Mash the avocado. While the mushrooms cook, halve the avocado, remove the pit, and scoop the flesh into a bowl. Add lemon juice and a pinch of salt, then mash with a fork until creamy but still slightly chunky.
- Toast the sourdough. Toast the sourdough slices until the edges are deeply golden and the centers feel firm and dry. A toaster or dry skillet both work well.
- Assemble and finish. Spread the mashed avocado thickly over each slice of toast. Pile the warm mushrooms on top and finish with flaky sea salt and microgreens or parsley. Serve immediately.
The sear makes them sweet
The biggest mistake with mushroom toast is stirring too much. Mushrooms release water as they cook, and constant stirring steams them instead of browning them. Let them sit still in the hot oil until one side turns deeply golden. That browning is where the savory flavor lives. If you want more ways to cook mushrooms, our easy mushroom crostini with caramelized onions uses a similar technique with sweet results.
Sourdough swaps and breads
Any hearty bread works in a pinch, but sourdough brings a subtle tang that cuts through the rich avocado and earthy mushrooms. A dense whole-grain loaf or a country rye are good backups. Avoid soft brioche or thin sandwich slices because they wilt under the warm topping. For another sourdough breakfast idea, try our sourdough crumpets or a slice of cranberry brie sourdough bread.
Keep the avocado green
Lemon juice is your insurance against brown avocado, but timing matters too. Mash the avocado just before you toast the bread so it spends the least amount of time exposed to air. If you must prep ahead, press plastic wrap directly onto the surface to seal out oxygen. The FDA provides helpful guidance on safe handling of produce at fda.gov/food.
Serve it any time of day
This toast works for breakfast, a light lunch, or a late-night snack. Add a soft poached egg on top for extra protein, or serve alongside a simple arugula salad dressed with lemon. For a brunch spread, pair it with avocado toast with scrambled eggs and fresh fruit so guests can choose their favorite.
Storing the components
Store cooked mushrooms in an airtight container in the refrigerator for up to three days. Reheat them in a hot skillet for two minutes to revive their texture. The avocado mash does not store well, so make it fresh each time. Keep bread at room temperature and toast only what you plan to eat.
FAQs
- Can I use white button mushrooms instead of cremini?
Yes. White buttons are milder and release a bit more water, so let them cook a minute or two longer to evaporate the liquid before adding garlic.
- How do I keep the toast from getting soggy?
Use thick slices of sturdy sourdough and toast them until the centers feel firm. Spread the avocado right before serving and serve immediately.
- Is this recipe vegan and gluten-free?
The toppings are vegan. Use a certified gluten-free bread to make the whole dish gluten-free, since standard sourdough contains wheat.
- Can I add cheese or eggs?
Yes. Crumbled feta or goat cheese adds a salty tang, and a poached egg turns this into a fuller meal.
- What herbs work besides thyme?
Rosemary, chives, or flat-leaf parsley all work. Rosemary is stronger, so use half the amount.
- How do I ripen an avocado quickly?
Place it in a paper bag with a banana or apple at room temperature. It should soften within one to two days.
- Can I make the mushrooms ahead?
Yes. Cooked mushrooms keep for up to three days refrigerated. Reheat them in a skillet over medium heat until sizzling.
