8ouncesjumbo lump crab meatI purchase this prepacked from the seafood department; you can also swap canned
Freshly ground black pepper
Chopped fresh parsley
Place a rack in the center of the oven. Preheat the oven to 350°F. With a paper towel, wipe off the outsides of mushrooms. Remove the stems and discard or use for soup or a stir fry (you can also freeze them). Set the caps aside.
In a medium mixing bowl, whisk together the Greek yogurt, egg yolk, garlic, and OLD BAY.
Stir in the breadcrumbs, green onion, cheddar cheese, and parmesan cheese.
Add the crab meat.
With a fork or spatula, stir gently to incorporate it evenly.
With a spoon or small scoop, generously mound the filling into each mushroom cap. They will be very full. Arrange the stuffed mushrooms in a baking dish large enough to hold them snugly in a single layer (they will touch at the edges).
Bake the crab-stuffed mushrooms until browned and the filling is cooked through, about 20 to 25 minutes. Some liquid may seep out of the mushrooms; simply leave it behind in the pan.
Transfer the crab stuffed mushrooms to a serving plate and let cool at least 5 minutes. Top lightly with ground black pepper and an additional pinch of salt to taste. Sprinkle with fresh parsley. Enjoy warm or at room temperature.
TO STORE: Refrigerate stuffed mushrooms in an airtight storage container for up to 2 days.
TO REHEAT: Gently rewarm leftovers in a baking dish in the oven at 350°F or in the microwave.
TO FREEZE: I don't recommend freezing cooked stuffed mushrooms, as they tend to be soggy once reheated. If you have leftovers and want to give it a try, freeze them in an airtight freezer-safe storage container for up to 3 months. Reheat from frozen.
TO MAKE AHEAD: Prepare the mushroom filling and stuff the uncooked mushrooms as directed. Lay the uncooked stuffed mushrooms on a baking sheet and freeze until solid. Transfer the frozen crab stuffed mushrooms to an airtight freezer-safe storage container for up to 3 months. Bake from frozen as directed, adding a few extra minutes to the bake time if needed.