Marinated Portobello Mushrooms with Roasted Pepper Vinaigrette

Name: Marinated Portobello Mushrooms with Roasted Pepper Vinaigrette
Ingredients: 4 tablespoons balsamic vinegar; 6 garlic cloves, minced; 2 tablespoons chopped fresh thyme leaves; 1/3 cup olive oil; 1 pound fresh Portobello mushrooms, stems trimmed; Olive oil for skillet; 1 red pepper, roasted, peeled, seeded and chopped coarsely; 1 Poblano chile, roasted, peeled, seeded and chopped coarsely; 4 garlic cloves, peeled; 2 tablespoons red wine vinegar; Juice of 1 lemon; 1/4 cup olive oil; Coarse salt; Freshly ground black pepper