filet mignon with tarragon with onion

3 tablespoons butter 2 tablespoons olive oil 3/4 lb sliced mushrooms 1/2 chopped onion 2 cloves chopped garlic 1 teaspoon thyme salt and pepper 4 filet mignon[...]

4 beef tenderloin steaks , cut 1-inch thick (about 1-1/4 lbs. total) 1 teaspoon olive oil 1/4 teaspoon black pepper 2 large portabella mushrooms , halved and[...]

4 beef tenderloin steaks , cut 1 inch thick 1 teaspoon olive oil 1/4 teaspoon pepper 2 large portabella mushrooms , halved and sliced 8 green onions , cut[...]