Erik, Here's Alton Brown recipe for cashew butter.
Cashew Butter:
2 tablespoons honey
1/3 cup walnut oil
10 ounces (approximately 2 cups) roasted cashews
1/2 teaspoon salt
Place the honey in a microwave-safe container and heat in the microwave for 15 seconds. Remove from the microwave and add the oil to the container. Place the nuts and salt in the bowl of a food processor and pulse for 5 seconds. Then, while the processor is running, very slowly drizzle in the honey and oil. Process until an emulsion is formed and the mixture is smooth; this will take approximately 45 seconds to 1 minute. If the mixture is too thick and doesn't spread easily, add a little more oil.
Yield: Approximately 1 to 1 1/2 cups