filet mignon with tarragon with garlic

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[...]

16 ounces trimmed beef tenderloin steaks (1-1/4 to 1- 1/2 inches thick) 2 teaspoons olive oil 1/4 teaspoon kosher salt 1/8 teaspoon fresh ground black pepper[...]

2 tablespoons red wine vinegar 2 garlic cloves , minced 1 tablespoon cracked black pepper 1 teaspoon dried rosemary leaves , crumbled 1 teaspoon dried oregano[...]