Gluten-Free Low Carb Fathead Reuben Calzone

Prep: 30 minCook: 20 min16 servingsmediumAmerican
Low Carb Fathead Reuben Calzone with Coconut Flour Crust

This keto-friendly calzone transforms the classic Reuben sandwich into a handheld comfort food using a fathead dough made with melted mozzarella and coconut flour. The low-carb crust encases tender corned beef, tangy sauerkraut, and melted Swiss cheese, all brought together with a creamy thousand island-style dressing. Perfect for those following ketogenic or gluten-free diets, this satisfying meal delivers all the flavors of a traditional Reuben in a portable, guilt-free package that works great for lunch or dinner.

Ingredients

16 servings
  • 4 cups mozzarella, shredded
  • 4 oz cream cheese
  • 1 cup coconut flour
    almond flour3/4 cupketogluten-free

    different texture, may need liquid adjustment

    Full guide →
  • 1 tsp Italian seasoning
  • ¼ tsp onion powder
  • ½ tsp garlic powder
  • ½ tsp salt
  • 2 tsp baking powder
  • 4 eggs, beaten
  • 1 lb corned beef, cooked and shredded
    pastrami1:1ketogluten-free

    similar flavor profile

  • 6 oz sauerkraut
    coleslaw mix1:1ketogluten-free

    different texture, less tangy

  • 8 oz Swiss cheese, shredded
    provolone1:1ketogluten-freedairy-free

    milder flavor

    Full guide →
  • ½ cup sour cream
  • ½ cup mayonnaise
  • ½ cup sugar free ketchup
  • cup dill pickle relish
  • 1 tbsp white wine vinegar

Instructions

  1. 1

    Preheat oven to 400 degrees F

  2. 2

    Melt the mozzarella and cream cheese together in the microwave for 2-3 minutes or over the stove top until you are able to incorporate them fully

  3. 3

    Combine the remaining dough ingredients in another bowl

  4. 4

    Wet hands and work the dry ingredients into the melted cheese mixture as best you can

  5. 5

    Line a baking sheet pan with parchment paper and flatten the dough with your hands or use another piece of parchment on top and a rolling pin to roll the dough out to 12 by 16 rectangle

  6. 6

    In a large bowl combine the corned beef, sauerkraut and dressing ingredients

  7. 7

    Mix until well combined

  8. 8

    Lay the mixture down the middle of the dough

  9. 9

    Top with cheese

  10. 10

    Roll up long side of dough and make sure to seal dough well by pressing together both ends

  11. 11

    Bake calzone for 20 minutes or until golden brown

  12. 12

    Allow 10 minutes before slicing and serving

Tips

Tip 1

Wet your hands when working with the fathead dough to prevent sticking and make handling easier

Tip 2

Use parchment paper both under and over the dough when rolling to achieve an even rectangle without sticking

Tip 3

Seal the calzone edges well by pinching and pressing to prevent filling from leaking during baking

Good to Know

Storage

Store covered in refrigerator for up to 3 days

Make Ahead

Can assemble and refrigerate up to 1 day before baking

Serve With

Serve warm, cut into slices

Common Mistakes

Watch

Don't overmix the fathead dough to avoid tough texture

Watch

Seal edges completely to prevent filling from leaking out

Substitutions

Dairy-Free Swaps

Swiss cheese
provolone1:1ketogluten-freedairy-free

milder flavor

Full guide →

Gluten-Free Swaps

corned beef
pastrami1:1ketogluten-free

similar flavor profile

sauerkraut
coleslaw mix1:1ketogluten-free

different texture, less tangy

Full guide →
coconut flour
almond flour3/4 cupketogluten-free

different texture, may need liquid adjustment

Full guide →
Find more substitutions →

FAQ

Can I freeze this calzone?

Yes, wrap cooled calzone tightly and freeze for up to 3 months. Reheat in oven at 350F until heated through.

What if my dough is too sticky to work with?

Wet your hands with water or lightly oil them. You can also chill the dough for 15 minutes to firm it up.

Can I make individual calzones instead?

Absolutely! Divide the dough into 4-6 portions and make personal-sized calzones. Reduce baking time to 15-18 minutes.