Cheesy Mushroom Gratin

Name: Cheesy Mushroom Gratin
Prep time: 20 min
Total time: 20 min
Cuisine: French
Ingredients: 18 portobello mushroom caps (about 3 1/2 lbs.), stems and gills removed (see Tip); 2 tablespoons extra-virgin olive oil; 0.5 teaspoon ground pepper; 0.25 teaspoon salt; 1 cup shredded part-skim mozzarella cheese; 0.33333334326744 cup shredded Gruyère cheese; 1 teaspoon chopped fresh thyme; 1 tablespoon chopped fresh flat-leaf parsley, divided; 0.33333334326744 cup whole-wheat panko breadcrumbs

Instructions

Prep:20min

Earthy portobellos are roasted then smothered in cheese in this easy low-carb side dish. Enjoy this gratin alongside pork or steak, or add a salad and turn it into a delicious vegetarian dinner.

Updated at: Fri, 21 Aug 2026 03:29:10 GMT