a small oven that can be placed on a kitchen surface and used to toast bread (= make it crisp and brown) and to bake and heat up small items of food

Microwave or toaster ovens can save up to 30 percent of the energy needed to cook or reheat food in a regular oven. 比起用普通烤箱烹饪或重新加热食物，微波炉或电烤箱最多可节省所需能量的30%。

Make the dish ahead of time, and reheat in a toaster oven. 提前做好这道菜，然后在电烤箱里重新加热。