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Mozzarella Stuffed Soft Pretzels

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  • Prep Time: 1 hour 15 minutes (includes rising)

  • Cook Time: 15 minutes

  • Total Time: 1 hour 30 minutes

  • Skill Level: Intermediate

  • Yield: 8 large stuffed pretzels

  • Recipe Category: Snack, Appetizer, Bread

  • Recipe Cuisine: German-American Fusion

The soft pretzel is a masterpiece of the baker’s art—a chewy, salty, and deeply satisfying bread that needs no introduction. But what if we took that beloved classic and hid a secret inside? A pocket of pure, stretchy, molten mozzarella cheese that transforms it from a simple snack into a show-stopping, gourmet indulgence. These Mozzarella Stuffed Soft Pretzels are exactly that: a fun, challenging, and incredibly rewarding baking project that yields a result far greater than the sum of its parts.

The magic of this recipe lies in the contrast of textures and flavors. The exterior is a deep mahogany brown, glossy, and sprinkled with coarse salt, providing the signature pretzel chew. As you break through that shell, you’re met with a soft, warm, and airy bread interior that gives way to a thrilling, stretchy, savory cheese pull. While the process involves yeast and a unique boiling step, the techniques are broken down into manageable stages. This is more than a recipe; it’s a culinary adventure that will fill your kitchen with an incredible aroma and fill your table with one of the most impressive homemade treats you’ll ever make.

Ingredients

For the Pretzel Dough:

  • 1 ½ cups (360ml) warm water (around 110°F/43°C)

  • 1 tablespoon light brown sugar

  • 2 ¼ teaspoons (1 packet) instant or active dry yeast

  • 4 ½ cups (563g) bread flour, plus more for dusting

  • 2 tablespoons unsalted butter, melted and cooled

  • 1 ½ teaspoons fine sea salt

For the Cheese Filling and Poaching Liquid:

  • 8 sticks (about 1 oz each) low-moisture, part-skim mozzarella string cheese

  • 8 cups (2 quarts) water

  • ½ cup (120g) baking soda

  • ¼ cup (50g) granulated sugar

For Topping and Finishing:

  • 1 large egg yolk beaten with 1 tablespoon water (egg wash)

  • Coarse pretzel salt or flaky sea salt

  • Optional for serving: Warm marinara sauce, spicy mustard, or beer cheese dip

Instructions

Step 1: Create the Pillowy Dough

  1. Activate the Yeast: In the bowl of a stand mixer or a large mixing bowl, combine the warm water and brown sugar. Stir to dissolve. Sprinkle the yeast over the top and let it sit for 5-10 minutes until it becomes foamy. This “proofing” step confirms your yeast is alive and active.

  2. Mix the Dough: Add the bread flour, melted butter, and salt to the yeast mixture. Using the dough hook attachment on low speed, mix until a rough dough forms. Increase the speed to medium and knead for 5-7 minutes, until the dough is smooth, elastic, and pulls away from the sides of the bowl. If kneading by hand, turn onto a floured surface and knead for 8-10 minutes.

  3. The First Rise: Shape the dough into a ball. Lightly oil a large bowl, place the dough inside, and turn it to coat. Cover the bowl with plastic wrap or a damp kitchen towel and let it rise in a warm, draft-free place for 30-45 minutes, or until just about doubled in size.

Step 2: Shape and Stuff the Pretzels

  1. Divide the Dough: Once risen, punch the dough down to release the air. Turn it out onto a lightly floured surface and divide it into 8 equal pieces. Roll each piece into a smooth ball and cover them with a towel to rest for 5 minutes. This relaxes the gluten, making the dough easier to shape.

  2. The Rolling Technique: Working with one ball at a time (keep the others covered), roll the dough out into a long oval shape, about 10-12 inches long and 4 inches wide.

  3. The Secret to Sealing: Place one stick of mozzarella string cheese along the long edge of the dough oval. Resist the urge to use fresh mozzarella, as its high water content will steam and burst through the dough. Tightly roll the dough around the cheese, pinching the final seam very firmly to seal. Then, gently roll the log back and forth on the counter with your hands, applying light pressure to seal the seam completely and create a uniform, 16-inch long rope.

  4. Form the Classic Pretzel Shape: Take the rope and form a “U” shape. Cross the ends over each other twice to create a twist in the center, then bring the ends down and press them firmly onto the bottom curve of the “U”. You should now have a classic pretzel shape with the cheese securely hidden inside. Repeat with the remaining dough and cheese.

Step 3: The Key to the Perfect Crust: The Baking Soda Bath

  1. Preheat and Prepare: Preheat your oven to 425°F (220°C). Line two large baking sheets with parchment paper and generously grease the paper. This is crucial, as the pretzels can stick even on parchment.

  2. Create the Poaching Liquid: In a large, wide pot (a Dutch oven works well), bring the 8 cups of water and ¼ cup of sugar to a boil. The sugar helps with browning. Once boiling, carefully and gradually whisk in the baking soda. It will foam up dramatically—this is normal! Reduce the heat to a gentle simmer.

  3. The Poach: Carefully lower 2-3 pretzels into the simmering baking soda bath. Poach them for 30 seconds on one side, then gently flip and poach for another 30 seconds. This alkaline bath is the scientific secret to the pretzel’s signature dark, glossy, and chewy crust.

  4. Transfer: Use a slotted spoon or spider strainer to remove the pretzels, allowing excess liquid to drip off, and place them on the prepared baking sheets.

Step 4: Bake to Golden-Brown Perfection

  1. Apply the Egg Wash: Once all pretzels are poached and on the baking sheets, brush the tops lightly but thoroughly with the egg wash. Avoid letting egg wash pool in the crevices, as it can inhibit rising.

  2. Salt Generously: Sprinkle each pretzel immediately with a generous amount of coarse pretzel salt. The salt will adhere to the wet egg wash.

  3. The Final Bake: Using a sharp paring knife or a lame, make a small, shallow slash (about ½-inch long) on the top of each pretzel “arm.” This is a critical step! It acts as a steam vent, allowing the expanding air and moisture from the cheese to escape in a controlled way, preventing explosive cheese blowouts.

  4. Bake: Place the baking sheets in the preheated oven. Bake for 12-15 minutes, rotating the pans halfway through, until the pretzels are a deep, glossy, golden brown.

  5. Cool Slightly: Remove from the oven and let the pretzels cool on the baking sheet for at least 5-10 minutes before serving. CAUTION: The cheese filling will be extremely hot and molten. Allowing them to rest lets the cheese settle to a safe, yet still wonderfully stretchy, temperature.

Step 5: Serving the Ultimate Pretzel

  1. Serve the pretzels warm on a large platter. The moment of truth comes when you break one open—be prepared for that iconic, glorious cheese pull.

  2. Provide small bowls of warm marinara sauce for dipping, a grainy mustard, or a rich beer cheese sauce for the ultimate dipping experience.

  3. These are best enjoyed the day they are made, as the crust is at its peak chewiness.

Notes

  • Cheese is Key: Low-moisture mozzarella string cheese is the best choice. It has the perfect melt and stretch without releasing too much water. Fresh mozzarella will cause the pretzels to burst.

  • Seal Tightly: The single most important step for success is ensuring the dough is tightly sealed around the cheese. Any tiny gap will become a major leak during baking.

  • Don’t Skip the Slash: The small cut on top of the pretzel is not optional. It is your insurance policy against cheese eruptions.

  • Make-Ahead Tip: You can shape the pretzels and place them on the baking sheet, then cover and refrigerate for up to 8 hours before the boiling and baking steps. This is great for getting a head start on party prep.

  • Reheating: Reheat leftover pretzels in a 350°F (175°C) oven for 5-10 minutes to restore the crust’s chewiness. Microwaving will make them tough.

Nutrition Information (Per 1 Stuffed Pretzel)

  • Calories: ~350

  • Total Fat: 10g

  • Saturated Fat: 6g

  • Cholesterol: 45mg

  • Sodium: 1250mg (largely from the topping; adjust to taste)

  • Total Carbohydrates: 50g

  • Dietary Fiber: 2g

  • Sugars: 5g

  • Protein: 15g

Please note: Nutritional information is an estimate and can vary based on specific ingredients and the amount of salt used. The sodium value is high due to the characteristic pretzel salt topping.

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