Combine all ingredients in the bowl of a food processor. Blend until very smooth, about 5 minutes. If the mixture is thick, stream in more olive oil to smooth and thin it out. Taste, and sprinkle in more salt to your taste.
To roast carrots, preheat the oven to 375F. Arrange the carrots on a baking sheet and drizzle with olive oil. Sprinkle with salt. Roast the carrots for 30-40 minutes until soft and browned at the edges. Serve with the pesto.
Other uses for pesto: mix with hot pasta, spoon over fish, or spread on bread for an appetizer.
Enjoy!