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Home » Recipes » Gluten Free Beef Recipes

Chili Butter Flank Steak

Published: Aug 16, 2023 · Modified: Apr 20, 2025 by Kim · This post may contain affiliate links · 6 Comments

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Marinated, grilled, and smothered with a smoky spicy butter, this Chili Flank Steak is sure to become a favorite in your house!

close up of chili flank steak with chili butter on white platter.

There are hundreds, if not thousands, of flank steak recipes out there on the world wide web. And I'm sure a lot of them are every bit as good as this one. But I just can't bring myself to try any of them because I love this one so much, I can't possibly think about eating flank steak any other way.

What is Chili Flank Steak?

My family has been making chili flank steak for probably over two decades. My sister found the recipe a long time ago and we've loved it ever since. The steak is first marinated in southwest spices and grilled to perfection. But it doesn't stop there. A flavorful chili garlic butter is dolloped all over the slices of steak, which melts and creates somewhat of a sauce. I always like to serve mine with extra butter on the side for dipping because I can never get enough of it.

here's what you'll need

Steak and Marinade

ingredients for flank steak marinade measured and labeled on granite countertop.
  • Lime juice--use freshly squeezed lime juice
  • Sugar--just two teaspoons of sugar helps to caramelize the outside of the steak as it's grilling
  • Ground cumin--I LOVE cumin and it really makes this steak extra special

Chili Butter

ingredients for chili butter measured out and labeled on granite countertop.
  • Chili powder--there's a good amount of chili powder in this butter and it's so flavorful
  • Ground cumin--adding cumin in the butter as well as the marinade really gives that extra punch of cumin that makes this flank steak so yummy

preparing and grilling chili flank steak

Before grilling the steak, we need to whip up that delectable butter so it'll be ready to go as soon as the steak comes off the grill. Make sure the butter is soft and whisk or stir the hot sauce, cumin, garlic, and chili powder into the butter until smooth. Set this aside while we grill the steak.

chili butter ingredients in white bowl
chili butter that's just been beaten together

Getting a good sear on the flank steak is one of the keys to it being so tasty. I remember watching Anne Burrell on the Food Network years ago and she always said brown food tastes so much better. Although this isn't brown, I think what she meant is getting color or caramelization on the outside of foods means more flavor.

Flank steak benefits from a short time on the grill over a very hot flame, especially because it's so thin. Prepare your grill for direct heat, whether it's a charcoal, gas grill, or high heat pellet grill like mine. We've gone through many a grill in our days and found our favorite is our Oklahoma Joe's, which is a pellet smoker and also acts as a grill, getting up to over 650 degrees F with a special searing mode. Grill the steak hot and fast, especially for medium rare (which is our favorite).

searing flank steak on a hot grill

Serving Chili Butter Flank Steak

Flank steak needs to be cut against the grain for the most tender bites of steak. The grain runs horizontally along the length of the cut of meat, so cut along the width. After letting the steak rest for about 10 minutes, slice it into thin slices and place the slices on a serving platter. Immediately dollop spoonfuls of the chili butter all over the slices randomly so the flavorful butter melts all over each piece and almost creates a spicy sauce. So yummy! Serve immediately.

Other Uses for Chili Butter

This recipe makes a LOT of chili butter! But that doesn't mean you need to halve the recipe (although you could). Slather it on other foods, too, such as:

  • Grilled corn on the cob
  • Bread (artisan, sourdough, or Italian)
  • Chicken
  • Fish
  • Potatoes (like roasted potato wedges)

more gluten free grilling recipes

  • Easy Gluten Free Chicken Souvlaki
  • Gluten Free Honey Coriander Chicken Wings
  • Amazing Grilled Lemon Butter Shrimp
  • No Fuss Grilled Corn on the Cob
  • Copycat Baja Fresh Salsa
  • Fire Roasted Artichokes with Garlic Aioli
chili butter flank steak on white platter.

Chili butter flank steak is such a tender, flavorful, quick dinner to serve on a warm summer's day.

close up of chili flank steak with chili butter on white platter.

Chili Butter Flank Steak

Kim
Marinated, grilled, and smothered with smoky chili butter, this chili butter flank steak is sure to become a favorite in your house!
5 from 1 vote
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Cook Time 4 minutes mins
Marinating Time 4 hours hrs
Total Time 4 hours hrs 14 minutes mins
Course Main Course
Cuisine American
Servings 6 servings

Ingredients
 

Marinade

  • 1 1½-2 lb flank steak
  • 3 garlic cloves, minced
  • ¼ cup (60ml) freshly squeezed lime juice
  • 2 tablespoon Worcestershire sauce
  • 2 teaspoon sugar
  • 1 teaspoon ground cumin `
  • ½ cup (120ml) olive oil
  • salt and pepper to taste

Chili Butter

  • 1 cup (226g) butter, softened
  • 1 garlic clove, minced
  • 2 tablespoon chili powder
  • ½ teaspoon ground cumin
  • ½-1 teaspoon hot sauce, or to taste
Get Recipe Ingredients

Instructions
 

  • In a small bowl, add all marinade ingredients and whisk until combined. Pour over flank steak in a large (gallon size) ziptop bag. Refrigerate at least 4 hours, but preferably overnight (I actually prefer to marinate mine for 24 hours).
  • When ready to grill, beat or stir all butter ingredients in a small bowl until smooth. Set aside at room temperature until ready to serve.
  • Prepare grill for direct heat on high. Sear flank steak about 2-4 minutes on each side, depending on the thickness and the desired doneness. Two minutes for rare to medium rare, 4 minutes for medium well..
  • Remove from grill and allow to rest, tented with tin foil, for 10 minutes. Slice along the width, against the grain, into thin slices. Place pats or spoonfuls of the chili butter over the warm slices. Serve immediately with extra chili butter on the side.

Notes

Flank steak can be marinated up to 24 hours.  
Butter also goes well with grilled corn on the cob or oven browned potatoes.
Keyword chili butter, chili flank steak, Gluten Free
Tried this recipe?Tag @letthemeatglutenfreecake on Instagram so we can see!

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Comments

  1. Cathy L. says

    January 20, 2024 at 8:03 am

    I made this using a flat iron steak that was marked down 50% and it was delicious. Thank you for the recipe, it is a keeper. Any tips for other ways to use the chili butter- we have lots left over.. thinking grilled tilapia, or on rice.

    Reply
    • Cathy L says

      January 20, 2024 at 8:16 am

      Oops- I see you mention using leftover butter 🙄

      Reply
      • Kim says

        January 24, 2024 at 8:48 am

        No worries!

    • Kim says

      January 24, 2024 at 8:48 am

      Yes! Grilled fish of any kind, potatoes, steamed veggies, you name it!

      Reply
  2. Gillie says

    June 30, 2021 at 3:44 pm

    This looks fantastic! I guess my karma is bad, but I'm now allergic to ALL fish! Even the tiny amount in Worcestershire sauce bothers me. Could I trade out the Worcestershire for soy sauce? Or should I just ignore that ingredient entirely?

    thanks so much!

    Reply
    • Kim says

      July 01, 2021 at 8:28 am

      Oh no, Gillie! I'm sorry you've had bad luck with food allergies!!

      Yes, you should be able to substitute it and gf soy sauce would be a great alternative, or even coconut aminos 😍

      Reply

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Hey there, I'm Kim!

I won't let a celiac diagnosis stop me from enjoying my passion for baking and cooking, so stick with me and I'll show you how to make the BEST EVER gluten-free renditions of the food we used to know and love 🤗

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