Yes! Pour the dressing into ice cube trays and place it in the freezer. Once frozen, you can pop out the cubes and store them in an airtight container to help preserve the flavor. When you're ready to thaw the pesto dressing, place the cubes in an mason jar and let it thaw on the counter until it reaches a runny consistency again. Once it looks like salad dressing, you can store it in the fridge.