1. Mix warm water and yeast in a large bowl, letting it rest for 5 minutes until frothy.
2. Add brown sugar, oil, and salt to the yeast mixture, stirring to dissolve.
3. Gradually add all-purpose flour, mixing until a smooth dough forms. Knead the dough for 5 minutes until elastic and non-sticky.
4. Transfer dough to a greased bowl, cover with a damp cloth, and let it rise in a warm spot for 1 hour until it doubles in size.
5. Punch the risen dough to release air and divide it into sections. Roll the sections into ropes about 1.5 cm in diameter and cut into 1.5-inch pieces.
6. Bring water and baking soda to a boil in a large pot. Dip pretzel bites into the soda bath for 20-30 seconds, then remove with a slotted spoon and place on a parchment-lined baking sheet.
7. Preheat the oven to 400°F (200°C). You may brush the bites with an optional egg wash. Bake for 15 minutes or until golden brown.
8. While still warm, generously brush the baked pretzel bites with melted butter.
9. Combine granulated sugar and cinnamon in a zip-top bag. Place the buttered pretzel bites into the bag, shaking well to coat evenly.
10. Serve fresh and enjoy immediately, or store according to best practices to maintain freshness.