2.
In a mixing bowl, combine mushrooms, olive oil, salt, and pepper; mix to combine.
3.
Transfer mushrooms to a rimmed baking sheet and bake for 8 to 10 minutes, or until tender and browned.
4.
In the meantime, prepare the sauce.
5.
In a microwave safe cup or bowl, combine tomato sauce, onions, capers and lemon rind.
6.
Microwave on high for 30 seconds or until thoroughly heated.
7.
Remove mushrooms from oven and let stand a few minutes.
8.
Toss the mushrooms with previously prepared sauce.