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Grain-Free Reuben Quesadillas (Low-Carb, Gluten-Free)

Holy moly — these Easy Grain-Free Reuben Quesadillas are absolutely dreamy. If you love the classic Reuben sandwich but want a faster, grain-free twist, this is the recipe for you. Crispy almond-flour tortillas are piled with tender corned beef, tangy sauerkraut, melted Swiss, and a quick homemade Russian-style sauce. They cook up in about 20 minutes and make a satisfying lunch or weeknight dinner that feels indulgent without the bread.

During quarantine I started experimenting more in the kitchen and making unique lunches to keep things interesting for the family. Quesadillas were a natural place to play — the kids already love ham and cheese — so I thought, why not turn a Reuben into a quesadilla? My husband Clayton is a huge Reuben fan, so I surprised him with a grain-free version using Siete Foods almond flour tortillas, and it was a hit. These quesadillas are crisp on the outside, gooey inside, and the Russian-style sauce brightens every bite.

Easy Grain-Free Reuben Quesadillas, golden and crispy

The formula is simple: make a quick Russian-style sauce, layer tortillas with sauce, corned beef, Swiss cheese, and sauerkraut, then crisp them in a skillet with a little avocado oil. They come together quickly and are a wonderful gluten-free and grain-free alternative to the traditional deli sandwich. Serve with pepperoncini or your favorite chips for a classic deli vibe.

Grain-Free Reuben Quesadillas with melty Swiss cheese

Easy Grain-Free Reuben Quesadillas

Prep: 10 mins · Cook: 10 mins · Total: 20 mins · Servings: 4 people

Ingredients

For the Russian-Style Sauce

  • 2 tbsp mayonnaise (homemade or your preferred brand)
  • 2 tsp unsweetened ketchup
  • 1 tsp dill relish or finely chopped dill pickles
  • 2 tbsp very finely diced yellow onion
  • 1/2 tsp chili powder
  • 1/2 tsp garlic powder
  • 1 tsp hot sauce (optional, adjust to taste)

For the Quesadillas

  • 8 grain-free tortillas (almond flour tortillas recommended)
  • 1/2 lb thinly sliced corned beef (from the deli counter)
  • 8 slices Swiss cheese
  • 3/4 cup sauerkraut, well drained
  • Kosher salt, to taste
  • 2–4 tsp avocado oil, for frying
  • Pepperoncini, optional, for serving

Instructions

Make the Russian-Style Sauce

  1. In a small bowl, combine the mayonnaise, unsweetened ketchup, dill relish (or chopped pickles), diced onion, chili powder, garlic powder, and hot sauce. Stir until smooth and taste; adjust seasoning if needed. Set aside while you assemble the quesadillas.

Build the Quesadillas

  1. Lay out four tortillas flat. Spread a generous layer of the Russian-style sauce evenly over each tortilla.
  2. Distribute the thinly sliced corned beef evenly across the sauced tortillas.
  3. Place two slices of Swiss cheese on top of the corned beef on each tortilla.
  4. Top each with roughly 3 tablespoons of well-drained sauerkraut (about 3/4 cup total split between the four). Sprinkle a small pinch of kosher salt over the sauerkraut if desired.
  5. Cover each assembled tortilla with a second tortilla to form a quesadilla.

Cook the Quesadillas

  1. Heat a large non-stick skillet over medium heat. When hot, add about 2 teaspoons of avocado oil and swirl to coat the pan.
  2. Carefully place one or two quesadillas in the skillet (avoid overcrowding). Cook until the bottom is golden and crisp, about 3–4 minutes.
  3. Using a sturdy spatula, flip each quesadilla and cook the other side until golden brown and the cheese is fully melted, another 3–4 minutes. If the skillet looks dry, add an additional teaspoon of avocado oil to help them crisp.
  4. Transfer cooked quesadillas to a cutting board and slice each into 4 wedges. Serve hot with pepperoncini and a side of chips if you like.

Nutrition information is automatically calculated by recipe tools and should be used as an approximation.

Additional Info

Author: Alex Snodgrass

Servings: 4 people

Tips & Variations

  • For extra crispiness, press the quesadilla gently with a spatula while it cooks to encourage even browning.
  • If you prefer less tang, rinse and thoroughly drain the sauerkraut before using to reduce acidity.
  • Try swapping the corned beef for pastrami or thinly sliced roast beef for a different flavor profile.
  • To make ahead, assemble quesadillas and store them in the refrigerator for up to 24 hours; cook just before serving to maintain crispness.
Sliced Grain-Free Reuben Quesadilla served on a board

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