Blue Oyster Mushroom Toast with Herbed Yogurt Sauce Recipe

Crispy pan-seared blue oyster mushrooms on golden sourdough with herbed yogurt sauce and a runny sunny-side-up egg. This 25-minute recipe looks fancy but comes together fast. Basted mushrooms, bright sauce, perfect toast. Perfection.
Total Time: 25minutes
Makes: 2 large Sandwiches
What you'll need
- 8 oz blue oyster mushrooms
- 4 thick slices sourdough bread
- 2 large eggs
- 2 tablespoons olive oil
- 1 cup Greek yogurt
- 2 tablespoons fresh dill, finely chopped
- 2 tablespoons fresh parsley, finely chopped
- 1 tablespoon fresh mint, finely chopped (optional)
- 1 small garlic clove, grated or minced
- 1-2 tablespoons fresh lemon juice
- 1-2 tablespoons extra virgin olive oil
- Salt and cracked black pepper to taste
- ½ medium red onion, thinly sliced
- 1 cup fresh arugula
- Lemon zest (optional)
How to make it
- 01
In a mixing bowl, combine the Greek yogurt, dill, parsley, mint (if using), grated garlic, lemon juice, and olive oil.
- 02
Season with salt and cracked black pepper and stir until smooth.
- 03
If it's too thick, thin it out with a teaspoon of water or extra lemon juice.
- 04
You can let it rest in the fridge for at least 15 minutes to let the flavors develop, but it's not required.
- 05
Heat a skillet over medium heat without any oil and add your blue oyster mushrooms.
- 06
Let them cook, stirring occasionally, until they release their moisture and reduce in size by about half.
- 07
This takes about 5-7 minutes.
- 08
Once they've sweated out their water, add the olive oil and turn the heat up to medium-high.
- 09
Continue sautéing until the mushrooms are crispy and deeply golden brown, another 5-8 minutes.
- 10
Season with a pinch of salt.

- 11
When you're ready to assemble, spread the herbed yogurt sauce generously on each piece of toasted sourdough.
- 12
Layer on the arugula, thinly sliced red onion, and your crispy sautéed blue oyster mushrooms.
- 13
Top with a sunny-side-up egg and serve immediately while everything's still warm.
- 14
Garnish with extra lemon zest or flaky sea salt if you want.
- 15
These are perfect for brunch, lunch, or a light dinner.
- 16
Pair with fresh fruit or a side salad.
- 17
Storage Tips Best served right after you build them.
- 18
Leftover mushrooms will keep in the fridge for 5-7 days, and you can make the herb sauce a day ahead.
- 19
For extra crispy toast, brush it with olive oil before toasting.


