"Collards and Cabbage"@en . . . "If collard greens are not available, use 2 Ibs. spinach instead, in which case cut cooking time to 10 minutes. In a 4-quart saucepan:"@en . . . . . . "If collard greens are not available, use 2 Ibs. spinach instead, in which case cut cooking time to 10 minutes. In a 4-quart saucepan:"@en . . . .