Whisk together the warm water and yeast. Cover and let sit for 5 minutes.
Add the flour, salt, vanilla extract, and sweetener. If using a stand mixer, mix on low for 2 minutes. (I used our ninja on dough option until well combined. About 20 seconds)
Knead the dough for 4 minutes. Then Press the blueberries into the dough. (Fresh are better because when the frozen ones thaw, it makes the dough more wet and makes it harder to form the bagels.
Lightly spray a large bowl with nonstick spray. Place the dough in the bowl and flip to coat all sides. Cover with a clean kitchen towel and allow to rise at room temperature for 60-90 minutes, or doubled in size. (I waited 90 minutes for this batch because I think to frozen blueberries made it rise slower.)
Line 2 baking sheets with parchment paper.
When the dough is ready, punch it down to get rid of any air bubbles. Divide the dough into 8 pieces. (Doesn't have to be perfect, although the perfectionist part of me would like them to be.) Shape each piece into a ball and then poke your finger through the middle and form a bagel shape. Let them sit while you prepare the water bath.
Preheat the oven to 425F (218C)