Preheat the oven to 375℉/190℃. Line the muffin tin with liners and set aside.
In a bowl, add the flour, cornstarch, baking soda, baking powder, cinnamon, and salt. Stir to combine and then set aside.
2 cups all-purpose flour, 1 tsp baking soda, 1 3/4 tsp baking powder, 1/4 tsp salt, 1/4 tsp cinnamon, 2 tsp cornstarch
In a large bowl, add the eggs and white sugar. Whisk vigorously for 2-3 minutes until well combined.
2 large eggs, 3/4 cups white sugar
Add the oil and vanilla in. Continue whisking for another 1-2 minutes.
1/2 cup oil, 1 tbsp vanilla
Whisk the cottage cheese in for another minute.
1 cup cottage cheese
Add the dry and wet ingredients together with a spatula. Don't over-mix! Once you see almost no flour streaks, stop mixing.
Toss the blueberries in 1 tsp of flour, evenly coating them. Then add them into the muffin batter and mix until just combined. Once there are no more flour streaks, stop mixing. Don't over-mix!
1 1/2 cups fresh blueberries
Divide the batter evenly between the liners. Add extra blueberries and sprinkle some white sugar on top (optional).
Bake the muffins for 25-30 minutes or until a toothpick inserted comes out clean.
Allow to cool, and enjoy! These muffins are so delicious and simple to bake.