Preheat the oven to 350 degrees Fahrenheit. Line a muffin tin with silicone muffin cup liners or grease a nonstick muffin tin. I do not recommend paper liners as the muffins will stick.
Blend the wet ingredients: In a blender, add the cottage cheese, oats, milk, eggs, dates, and vanilla in that order. Blend until smooth and creamy.
Stir in the dry ingredients: Add the flour, baking powder, cinnamon, and salt and fold in gently, using a spoon or spatula, until just combined. Do not overmix!
Fold in blueberries: Gently fold in the blueberries.
Divide the batter evenly among the muffin cups.
Bake: Place the muffins in the preheated oven and bake for about 18-22 minutes, or until a toothpick inserted into the center comes out clean.
Cool and serve: Allow the muffins to cool for a few minutes in the tin, then transfer to a wire rack to cool completely.
Notes
Use Room Temperature Ingredients – This helps everything blend smoothly and evenly. If your milk or eggs are too cold, they may cause the cottage cheese to clump.
Soak the Dates Well – Softening the dates in warm water for 10 minutes makes them easier to blend, ensuring natural sweetness is evenly distributed.
Don't Blend the flour - I've tried blending the flour with the other ingredients, and the muffins ended up much denser and deflated significantly compared to when I gently folded it in. So, be sure to follow the instructions exactly!
Fold in the Blueberries Gently – After blending, stir in the blueberries by hand with a spatula to prevent them from breaking and turning the batter purple.
Adjust Sweetness if Needed – If you like a sweeter muffin, you can add a drizzle of maple syrup or honey to the wet ingredients before blending.