c'est l'heure de manger le gâteau
Gateau is food cake in french
I don't think you would. It is not something the French would be inclined to eat. Having said that, lava is "lave" in French, and cake is "gateaux." So maybe "lave-gateaux"?
A birthday cake in French is 'un gâteau d'anniversaire'
gâteau
We eat cake translates as Wir essen Kuchen.
A banana cake is "un gâteau à la banane" in French.
gâteau sucré
In French, you would say, "Puis-je avoir un gâteau, s'il vous plaît ?" This phrase translates directly to "Can I have a cake, please?" in English. It’s a polite way to request a cake in French-speaking contexts.
If you mean a slice of cake it is - tranche
gâteau basque.
acheter un gâteau
to eat is spelled 'manger' in French