Kitchen Tip: Spicy marinade gives tenderloin steaks a kick, but if you prefer something milder, omit the ground red pepper flakes. The marinade also doubles as a delicious sauce; simply follow these directions: Place marinade in a medium saucepan over medium-high heat. Bring to a simmer, and cook for 6 to 8 minutes, stirring occasionally, until slightly thickened. Serve with steaks, if desired.