Stack sweet potato planks with chicken, spinach and peanut sauce for a hearty dinner

While the potatoes are roasting, place the spinach in a large, microwave-safe bowl, cover, and microwave on HIGH until the spinach is wilted but still bright green, 90 seconds. (Alternatively, you can steam the spinach in a steamer basket set over a pot of boiling water for 90 seconds.) In a medium bowl, stir together the peanut butter, water, soy sauce, vinegar, ginger, lime juice, honey and red pepper flakes until well combined and creamy. Taste, and season with more red pepper flakes, if desired.