How long can I keep sauteed (actually caramelized) onions at room temperature? I finished cooking them at 1pm and will be using them in an onion tart which will then be baked for 40 minutes at around 4:30. Can I leave them out or do I need to refrigerate them?
"If you are not killing plants, you are not really stretching yourself as a gardener." -- J. C. Raulston, American Horticulturist