In a big bowl, add sugar, warm water, and yeast. Allow it toss it for around 5 minutes until the yeast is bubbly.
Add salt and flour to the salt mixture and then stir until it forms a dough.
Put the dough onto a surface with a little dough and press and fold it for about 10 minutes until the dough is soft and elastic.
Place the dough in a bowl with some oil, cover it with a clean kitchen towel and then leave it in a warm place for about an hour or until it doubles in size.
Once the dough is bigger in size, punch it down and mix in the blueberries until they evenly spread throughout the dough.
Split the dough into 8 parts of same size and roll each part to a ball. With the help of your finger, poke a hole through the center of each ball and then stretch the hole gently to form a bagel.
Put the bagels on a lightly greased or lined with parchment paper baking sheet. Cover then with clean towel and then allow them rise for an additional 20-30 minutes.
While the bagles are rising, set the temperature of the oven to 400 F (200 C).
For a chewier crust, you can boil some water in a pot and add maple syrup or honey. Boil the bagels, 2-3 at a time, and allow them cook for around a minutes each side. With a help of a slotted spoon, take them out from the water and then put them back on a baking sheet.
Bake the bagels in the oven until golden brown and sound hollow when you tap their bottom, it may take around 20-25 minutes.
Before slicing and serving, let the bagels cool on a wire rack.
It’s time to serve the blueberry bagels with toppings like jam, butter, cream cheese etc.