Preheat oven to 350F degrees. Coat a muffin pan with nonstick cooking spray.
In the bowl of a stand mixer fitted with the paddle attachment, beat the butter and sugar until fluffy. Add the vanilla, eggs and milk. Scrape down the bowl as necessary until everything is combined.
Place the cottage cheese into the bowl of a food processor. Whip until completely smooth. Beat the whipped cottage cheese into the wet ingredients.
In a separate mixing bowl, whisk together the flour, baking soda, baking powder, cinnamon and salt.
With the mixer running on low speed, slowly incorporate the flour mixture into the wet ingredients. Fold in the blueberries.
Fill the muffin pan 3/4 of the way up with batter. Bake for 25 minutes, until a toothpick inserted into the center of a muffin comes out clean.