The result provided a perfect send-off for the Lionesses ahead of travelling to the European Championship in Switzerland, which is due to begin on Wednesday.
Toone was named in the starting XI by manager Sarina Wiegman, in the no.10 position behind her best friend and former United team-mate Alessia Russo.
Ella made a terrific start by opening the scoring in the 10th minute, hitting a right-footed effort from 20 yards that flew past the goalkeeper via a deflection.
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A deflected effort has England in front against Jamaica#ITVFootball | @Lionesses pic.