Image 1 of 1 Au Gratin Potatoes $39.95 Au gratin potatoes from Frank's Restaurant. A holiday catering side. Pickup in Baton Rouge or Prairieville. Add To Cart Added! Au gratin potatoes from Frank's Restaurant. A holiday catering side. Pickup in Baton Rouge or Prairieville. You Might Also Like Sweet Potato Crunch $37.95 Cornbread Dressing $33.95 Mashed Creamed Potatoes $31.95 Country Green Beans $33.95 Garden Salad $29.95