Flank steak is one of those cuts that rewards you for thinking slightly outside the box. It’s lean, affordable, takes smoke well, and when you butterfly it open you’ve got a natural canvas for whatever you want to stuff inside. Most people go with cheese and peppers. Our then-11-year-old had a better idea: load it with chimichurri instead, roll it tight, and smoke it over mesquite. We weren’t going to argue with that.
The chimichurri here does double duty. Packed with flat-leaf parsley, cilantro, garlic, red wine vinegar, and a hit of red pepper flakes, it works as both the stuffing and the finishing sauce. Just spoon the leftover over the slices when you serve. The mesquite smoke adds a bold, earthy backbone that plays beautifully against the brightness of the herbs. Pull it at 125°F, rest it ten minutes, and slice it either as a full roll or into individual pinwheels if you want a presentation that’ll stop the table cold.
Chimichurri Stuffed Flank Steak
Course: Grills, Recipes, Red Meat4
servings30
minutes40
minutes300
kcalIngredients
1 2-3 lbs Flank Steak
Kosher Salt
Fresh Cracked Pepper
Optional: Traeger Mesquite or Signature Wood Pellets
For the Chimichurri Sauce
1 cup Flat Leaf Italian Parsley
1 cup Fresh Cilantro
1 Onion, Red or Sweet
5 Cloves Garlic
3/4 cup extra virgin Olive Oil
1/4 cut red wine vinegar
2 teaspoons lemon juice (or lime)
1 teaspoon Red Pepper Flakes
Directions
- Prep your grill to 450F
- For the Chimichurri Sauce
- Put all of the ingredients for the Chimichurri into a food processor and pulse until you have a thick sauce consistency. Note: Leftover Chimichurri can be stored in an airtight container for up to a week.
- For the Flank Steak
- With a very sharp knife, take your time and butterfly the Flank Steak. We’ve linked to a tutorial below.
- Pound the Steak evenly flat in the middle if necessary
- Pour an even layer of Chimichurri Sauce in the middle of the Steak.
- Cut three to four even lengths of twine and place under the Steak. Keep two of the pieces close to the ends.
Tip: Use more twine if you wish to slice into individual pinwheel servings, placing approximately 1-1.5in apart. - Roll the steak from one end and tie the ends tight. Some of the sauce will seep out, this is ok.
- Place the Steak on the grates and smoke (using Super Smoke if available) approximately 15 minutes, then flip and cook another 10-15 minutes. Using the thermometer, poke the middle of the steak and pull at approximately 125F for well-done ends and medium rare center.

- Let the Steak rest for 10 minutes, slice and enjoy!
Recipe Video
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