Skip to Main Content
Costco US homepage
  • Photo
Type and press the down arrow to browse search suggestions

Flank Steak

Flank SteakFlank Steak
Flank Steak. Cut Your Roasts and Steaks at Home and Save!Flank Steak. Cut Your Roasts and Steaks at Home and Save!
Flank Steak
Flank Steak
Benefits of Buying Vacuum-Packaged Beef:
  • Customization - choose your own size of roast or thickness of steaks
  • Portion control
  • Meal planning
  • Multiple uses - roasts, steaks, stir fry, hot pot, tacos, etc

What You’ll Need:
  • Sharp knife
  • Cutting board
  • Paper towels
  • Freezer-proof packaging
Instructions:
  1. Use paper towels to absorb any excess meat juices when opening the bag; discard used towels.
  2. When opening the bag, expect the beef to bloom to a bright cherry-red color and have a strong, natural beef aroma.
  3. Trim excess fat.
  4. Lightly score a crosshatch pattern (about ⅛” deep) across both sides. This cuts through surface muscle fibers and helps marinades and seasoning penetrate deeper.
  5. Take the steak out of the fridge 30 minutes before cooking so it cooks evenly.
  6. Trim excess fat after slicing into steaks, if desired.


Storing Beef After Cutting
Recommended storage times for maximum quality.

Fresh Beef

Refrigerator: 3 to 4 days at 35°F to 40°F
Freezer: 6 to 12 months at 0°F or below


Leftover Cooked Beef

Refrigerator: 3 to 4 days at 35°F to 40°F
Freezer: 2 to 3 months at 0°F or below

Grilling Times

Flank Steak


Take the steak out of the fridge 30 minutes before cooking so it cooks evenly. If marinated, remove excess marinade using paper towels and pat dry. Heat the pan/grill on high heat. Cook approximately 4-5 minutes per side. Rest 10 minutes before slicing. Slice against the grain.

Oven Roasting/Broiling Times
Oven Temperature - 350°F

Flank Steak


Take the steak out of the fridge 30 minutes before cooking so it cooks evenly. If marinated, remove excess marinade using paper towels and pat dry. Preheat the broiler. Move the oven rack near the top (3-4 inches below the broiler element). Set the broiler to high. Place the steak under the broiler and cook approximately 4-5 minutes per side. Rest 10 minutes before slicing. Slice against the grain.

Medium 145°, Medium Well 160°, Well Done 170°
Determining Doneness
For steaks (1/2 inch or thicker), insert an instant-read thermometer horizontally from the side so that it penetrates the thickest part of the center of the steak, not touching bone or fat.
Built At: 11/2/2026, 5:14:19 PM