Preheat oven to 350 degrees Fahrenheit.
Combine all wet ingredients into a bowl - mix well!
Gradually add all the dry ingredients into the same bowl - mix well!
Add blueberries in last.
Transfer mixture to a pan (depending on the size will change the bars thickness) and spread to evenly distribute.
Place in the oven for about 30-35 minutes.
Once golden brown, take out and let sit for 10 minutes.
Serve right away or keep it in the fridge for 5 days!