Usage patterns
〈物〉でシチューを作るto make stew with (ingredients)
I made stew with chicken and vegetables.
シチューを煮込むto simmer stew (until it thickens/flavors blend)
I let the stew simmer slowly over low heat.
〈物〉をシチューにするto turn something into stew
I turned the leftover vegetables into a stew.