Filet Mignon With Mushrooms with garlic

3 tablespoons light olive oil 2 garlic cloves , minced 1 onion , diced 1 small carrot , sliced 1 stalk celery , sliced 1 tablespoon tomato paste 2 cups[...]

3 tablespoons butter 2 tablespoons olive oil 12 ounces button mushrooms , thinly sliced 1/2 cup minced shallot (about 3) 4 garlic cloves , minced 1 tablespoon[...]

5 tablespoons butter , divided 2 tablespoons oil, divided 1 lb white button mushrooms , thinly sliced (can use less) 1/2 cup minced shallot , divided (about 3[...]