Grilled Portobello Mushroom Caps

Here's a friend's recipe that is great! He makes them on the grill and they are a great vegetarian option for bbqs or parties where your grilling up steaks or burgers and you need some vegetarian options - the meateataers will love them too:
1 pound portobello mushroom caps
1 tablespoon olive oil
1 teaspoon chopped garlic
salt & pepper to taste
1 teaspoon chopped fresh thyme leaves

Wipe the mushroom caps clean with a damp towel. Combine the olive oil and garlic and brush the mixture on the mushroom caps. Season the mushrooms with salt, pepper and thyme.

Grill or broil the mushrooms until tender.