Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners.
In a mixing bowl, combine the cottage cheese, melted butter, and sugar.
Beat in the eggs one at a time until well combined.
Add the vanilla extract and mix thoroughly.
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
Gradually fold the dry ingredients into the wet mixture until just combined.
Scoop the batter into the prepared muffin tins, filling each about 2/3 full.
Bake for 20-25 minutes or until a toothpick inserted into the center comes out clean.
Allow the muffins to cool in the pan for 5 minutes before transferring them to a wire rack.
Dust with powdered sugar if desired, and enjoy!