Meanwhile, wash cashews in a colander under very hot water.
Place drained cashews and remaining ingredients in blender and blend until very smooth. (A heavy-duty blender works best for this recipe; other blenders may not get the mixture smooth enough. Mixture should be very smooth with no graininess.)
When pasta is done, drain well, and place in an oiled 2 1/2-quart casserole dish.
Pour blender mixture over pasta and very lightly mix.
Bake uncovered at 375°F for 15 minutes. Serve hot.
Notes
The amount of carrots can vary slightly without negatively affecting the final product. If you have a powerful blender, just peel and trim 2 medium carrots and place in blender whole. No need to slice and measure.