First, the cashews need to be softened. See this article on how to soak cashews. My go-to method is to add the cashews and enough water to cover them to a microwave-safe bowl. Microwave for 2 minutes, then let them sit in the water for 20 minutes. Drain.
Blend all alfredo ingredients, including the drained cashews, until super smooth.
Pour mixture into a sauce pan and warm on medium heat until the sauce thickens.
Roasted Broccoli
Preheat oven to 400℉ and line a baking sheet with parchment paper.
Toss all ingredients together in a bowl until the broccoli is well coated.
Spread broccoli out onto the baking sheet and roast for 15 minutes or until broccoli is tender.
Toss alfredo sauce with broccoli and pasta of choice and serve!