Step 1: Prepare the Dough

1. In a large bowl, whisk together the flour, yeast, sugar, and salt.

2. Add the warm water and melted butter, then mix until a soft dough forms.

3. Transfer the dough to a lightly floured surface and knead for about 5-7 minutes until smooth and elastic.

4. Place the dough in a greased bowl, cover with a kitchen towel, and let it rise in a warm place for 1 hour or until doubled in size.

Step 2: Prepare the Mozzarella Filling

1. Unwrap the mozzarella sticks and cut each stick in half.

2. Set aside for later assembly.

Step 3: Preheat the Oven and Prepare the Baking Soda Bath

1. Preheat the oven to 425°F (220°C).

2. In a large pot, bring 4 cups of water to a boil.

3. Slowly add the baking soda, being cautious as it may bubble up.

Step 4: Shape the Pretzels

1. Punch down the risen dough and divide it into 12 equal portions.

2. Roll each portion into a 12-inch rope.

3. Flatten each rope and place a mozzarella stick half along the center.

4. Fold the dough over the cheese and seal the edges tightly.

5. Twist the filled rope into a pretzel shape by forming a “U,” crossing the ends, and folding them down.

Step 5: Boil the Pretzels

1. Carefully drop each pretzel into the baking soda bath for 30 seconds.

2. Remove with a slotted spoon and place on the prepared baking sheet.

Step 6: Add Egg Wash & Bake

1. Brush each pretzel with beaten egg and sprinkle with coarse sea salt.

2. Bake for 12-15 minutes or until golden brown and slightly puffed.

Step 7: Add Buttery Finish & Serve

1. Immediately brush the hot pretzels with melted butter.

2. Allow to cool slightly before serving warm with marinara, garlic butter, or your favorite dipping sauce.