Pressure Cooker Walnut Meat Recipe | Soft & Flavorful Plant-Based Protein Forget crunchy walnuts! This pressure cooker walnut meat is the ultimate plant-based ground meat substitute, tender, savory, and ready in just 20 minutes. (Well after you soak your walnuts) I used to slow-cook my walnut meat for hours, but discovered that a pressure cooker creates the same amazing texture in a fraction of the time. The best part? You control the texture by adjusting cook time, 15 minutes for a slight bite,