Preheat the oven to 375F and line a 6-cavity Jumbo Muffin mold.
Combine in a medium bowl, the flour, cinnamon, baking powder, and baking soda. Whisk to combine.
Use an immersion blender to puree the cottage cheese until smooth.
Pour the blended cottage cheese in a large mixing bowl. Add to it, the eggs, melted butter, and brown sugar. Whisk until smooth.
Pour the dry ingredients into the wet ingredients. Use a rubber spatula to start mixing the two together.
Add the grated carrots and the raisins to the batter. Fold in the ingredients until the the batter comes together, without over mixing.
Divide the batter equally in the 6 muffins cavities.
Bake the Carrot Cottage Cheese Muffins in the preheated 375F oven for 23-25 minutes. Muffins are ready when a toothpick inserted in the middle comes out clean.