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1
Preheat oven to 350 F.
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2
Start by wiping the mushrooms clean with a damp paper towel.
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Next, using a spoon, scrape out the gills so the caps are hollowed and cleaned.
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4
Set the caps aside.
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5
Heat a pan or stove-top grill over medium high heat.
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6
Brush the underside (gill side) of mushroom caps with some olive oil and place on grill or pan.
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Cook for 3-4 minutes or until browned.
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Brush the tops of the caps with oil while the underside is grilling, then flip and grill the tops for 3-5 minutes.
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9
Place cooked mushroom caps gill side up, on a rimmed baking sheet and set aside.
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10
In a small bowl, combine panko, feta, Parmesan, parsley and dried thyme.
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11
In a small skillet over medium heat, cook the olives, tomatoes and scallion.
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12
You should not need any oil since the olives are likely to be oiled or seasoned already.
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Cook until the tomatoes just start to break down, about 3-4 minutes.
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14
Once cooked, pour this into the panko mixture and mix well to combine.
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15
Spoon heaping tablespoons (1 1/2 tablespoons or so) into each mushroom cap.
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You may have mixture leftover, but thats OK!
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Bake for 20 minutes, then turn the broiler on high and broil for 3-5 minutes.
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Keep an eye on them so they do not burn.
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The caps are done when the panko is browned and the cheese is melted.
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Serve immediately.
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Reheating instruction: Bake in the oven at 350 F for 10-15 minutes, or put in toaster oven for 5-10 minutes at 350 F. Microwaving will make them soggy.
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Serving options: This can be served for two (2 caps/person) or it can be enough for 4 if used as a side dish or appetizer.
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23
You can also substitute the panko for the grain of your choice: cooked quinoa, rice, barley or couscous.