Literal Translation:
* Caws ar dost tat: This is the most direct translation, using the words for "cheese," "on," "toast," and "dad." It's grammatically correct but might sound a bit awkward.
More Natural Options:
* Toesen caws i'r tad: This translates to "cheese toast for dad" and is a more natural way to say it.
* Bara tost caws i'r tad: This translates to "cheese toast bread for dad" and is a bit more descriptive.
Playful Options:
* Tost a chaws i'r hen ddyn: This translates to "toast and cheese for the old man" and is a playful way to refer to your dad.
* Bwyd blasus i'r tad: This translates to "delicious food for dad" and is a more general way to refer to the meal.
Ultimately, the best way to say it will depend on the context and the tone you want to convey.