Sauteed Cremini Mushrooms

3 tablespoons unsalted butter
3 tablespoons minced shallots
1 teaspoon minced garlic
1 pound cremini mushrooms, thinly sliced
1 teaspoon chopped fresh thyme leaves
1/4 teaspoon salt
1/8 teaspoon fresh ground black pepper
3/4 cup balsamic vinegar

Set a 12-inch saute pan over medium-high heat. Add the butter and once melted, add the shallots and garlic to the pan. Cook for 1 minute, then add the mushrooms, thyme, salt and pepper. Continue to cook the mushrooms, stirring occasionally, until softened and most of the liquid has evaporated, 7 to 8 minutes. Deglaze the pan with the balsamic vinegar and continue to cook until the vinegar has reduced by 1/2, about 2 minutes. Remove from the heat and serve