Preheat the oven to 400 degrees Fahrenheit.
Add 1 cup boiling water and 1 cup unsalted cashews to a bowl.
Let the cashews soak in the boiled water for one hour. While the cashews are soaking, peel, then roughly chop 2 medium fresh red beets.
Add the peeled, chopped beets to a baking dish, along with 1/4 cup cold water, then cover the dish with a lid or aluminum foil.
Bake the beets for one hour at 400 degrees Fahrenheit or until they are fork tender.
Once the cashews have finished soaking, use a colander to drain and discard the soaking water, rinse the cashews, then add the cashews to the blender or food processor.
Add the cooked beets, 1 tablespoon fresh lemon juice, 1 teaspoon fresh lemon zest, 1 garlic clove, 3/4 cup cold water, and 3/4 teaspoon salt to the blender or food processor, then blend until smooth and creamy.
Serve this sauce with 4 servings of your favorite pasta. I like to mix the cooked pasta with the blended pink sauce in a pot on the stove set to low-medium heat for a couple of minutes before serving.