Beef Tenderloin with Marsala without roast chicken

4 tablespoons butter 2 tablespoons olive oil 14 ounces white button mushrooms , sliced (can use more) 2 -3 tablespoons shallots , finely chopped (or to taste)[...]

2 tablespoons olive oil 3 tablespoons balsamic vinegar 1 (1 1/2-2 lb) beef tenderloin 1 1/2 tablespoons white peppercorns 1 1/2 tablespoons black peppercorns[...]

1 1/2 tablespoons vegetable oil 1/4 cup chopped shallot 1 cup beef stock or 1 cup canned low sodium beef broth 1/2 cup dry white wine 1/4 cup brandy 1/2 cup[...]

1 cup boiling water 1/2 cup dried porcini mushrooms (about 1/2 ounce) 1 teaspoon extra virgin olive oil 1 1/2 cups chopped red onions 1/4 cup finely chopped[...]

6 (7 -8 ounce) beef tenderloin steaks kosher salt cracked black pepper 3 tablespoons canola oil 6 tablespoons unsalted butter , chilled, divided 4 garlic[...]

4 beef tenderloin steaks , cut 1 inch thick (about 6 oz. each) 1/2 cup uncooked lentils 1/2 cup water 2 cups ready-to-serve beef broth , divided 1 teaspoon[...]