Beef Tenderloin with Marsala without cherries stuffing

4 beef tenderloin fillets, sliced 1 in. thick 3 -4 tablespoons olive oil 1/4 lb bacon 2 garlic cloves , minced 1 1/2 cups Burgundy wine or 1 1/2 cups chianti[...]

2 tablespoons olive oil , divided 5 cloves garlic , peeled and minced 1 onion , finely chopped 10 ounces fresh mushrooms , sliced 1 lb baby spinach, washed[...]