Blend. Add the cottage cheese, tomato sauce, parmesan, cornstarch, Italian seasoning, and olive oil to a blender. Blend on high until completely smooth — no lumps or visible curds.
3/4 cup cottage cheese, 1/3 cup tomato sauce, 2 tbsp grated parmesan, 2 tsp cornstarch, 1 tsp Italian seasoning, 1 tsp olive oil