sheet cake
US /ˈʃiːt keɪk/
UK /ˈʃiːt keɪk/

1.
pastel de plancha, tarta rectangular
a large, flat, rectangular cake, typically baked in a sheet pan and often decorated for special occasions
:
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We ordered a huge sheet cake for the graduation party.
Pedimos un enorme pastel de plancha para la fiesta de graduación.
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The baker decorated the sheet cake with colorful frosting and sprinkles.
El panadero decoró el pastel de plancha con glaseado de colores y chispas.