This is the 12139th most frequent Polish word.
makaronem
"Makaronem" is the instrumental form of "makaron," meaning "with pasta" in English.
Here, 'makaronem' is used in the instrumental case as part of a prepositional phrase describing the dish made.
Zrobiłem dziś spaghetti z pysznym makaronem.
I made spaghetti with delicious pasta today.
'Makaronem' is again in the instrumental case, indicating the accompaniment in the dish.
Nie chcę jeść zupy pomidorowej z makaronem.
I don't want to eat tomato soup with pasta.
In this sentence, 'makaronem' is in the instrumental case, marking the noun in the action of serving.