Gluten Free Sheet Pan Beef Fajitas

Gluten Free Sheet Pan Beef Fajitas

This is how a gluten free dinner should be: Fast, easy, and full of flavor! You can have this tasty meal on the table in 30 minutes if needed, or you can marinate the steak ahead of time with some olive oil and the dried spices listed below for extra flavor.

Prep time: 10 minutes
Cook time: 15-20 minutes
Serves: 6


1½ lb. flank steak, sliced into thin strips
1 lb. bag mini sweet peppers, cut in half lengthwise and seeded
1 large red onion, thinly sliced
2 T. extra virgin olive oil
1 T. ground cumin
2 t. chili powder
½ t. cayenne pepper
1 t. red pepper flakes
Sea salt and black pepper, to taste
½ c. fresh cilantro leaves, roughly chopped
1 large lime, sliced


1 large avocado, diced
Corn tortillas or large lettuce leaves


Preheat oven to 400°F and line a large, rimmed baking sheet with parchment paper or a Silpat® baking mat. Set aside.

In a large mixing bowl, combine sliced flank steak, peppers, red onion, olive oil, cumin, chili powder, cayenne, and red pepper flakes. Generously season with salt and pepper, to taste, and mix until everything is well coated.

Spread the steak and pepper mixture onto the prepared baking sheet and roast in pre-heated oven for 15-20 minutes, or until the steak reaches the desired level of doneness and the peppers are soft and slightly caramelized.

Remove sheet pan from oven and sprinkle with fresh cilantro and a squeeze of fresh lime juice. Serve immediately with diced avocado, corn tortillas, or lettuce wraps for a low-carb option, if desired.



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This recipe is simple, quick, and easy! For easier clean up use a Silpat Baking Mat on your baking sheet. The Silpat is made of fiberglass mesh with high grade silicone the helps distribute heat and provides even baking and browning. Make sure to follow all instructions and do not cut on it! Click on the link or picture to get yours.

I used the Nordic Ware Baking Sheet for this recipe and it turned out perfect. A couple things I love about these baking sheets is they don’t warp in the oven at high temps so no more loud popping sounds coming from your oven and wondering if something flew off your baking sheet. I also love that they brown things perfectly on the bottom, my sugar cookies turn out amazing every time! Finally I love that my Silpat fits perfectly inside this pan! Click on the link and it will bloop you over to where you can get some for your kitchen.

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