If you are planning to serve your curry with rice, start cooking that first. If not, begin with chopping up your garlic, onion and eggplant. Sauteé the garlic and onion in coconut oil on medium heat for a few minutes. Then add your chopped eggplant, marinara sauce, 2 tsp curry powder, and the cayenne pepper. Let simmer, covered, on medium heat for 15 minutes. Optionally stir in 1 can of drained black beans and let the curry simmer for a few more minutes. Serve with rice, if desired.