Chefs 4 Hire. They are incredible.
Delcia, Betty Ann and Norma.
Great food, excellent service, and VERY affordable.
You plan a menu, they shop and do prep, show up and finish the cooking, serve, and clean up. They charge you the cost of the food (and give you the receipts) and then just add on a per-person charge and the cost of transportation (if any).
I always tip them at least 30% and even so it's still the best deal going.