Sauté onion and garlic
Add diced sweet potato and canned diced tomatoes
Stir in a generous scoop of peanut butter with vegetable broth
Season with ginger, cayenne, and cumin
Simmer until the sweet potatoes are tender and the broth has thickened into something almost velvety
Stir in greens (spinach, kale, or collards) at the end if desired