Whisk together 4 cups broth and grits in a sauce pan. Bring to a boil and then simmer over medium low heat, whisking constantly, until thick and bubbly. Cover and reduce heat to low.
Combine remaining ingredients in a blender and process until completely smooth.
Pour cashew mixture into the grits and whisk until thick and bubbly again over medium heat.
Remove from heat and let sit 5-10 minutes before serving.