Binary fission in amoeba
In binary fission, the fully grown parent cell splits into two halves, producing two new cells. After replicating its genetic material, the cell divides into two nearly equal sized daughter cells. The genetic material is also equally split. The daughter cells are genetically identical (unless a mutation occurs during replication).


Source: Binary Fission - Wikipedia

This corroborates with what I was taught in school as well.

A quick Google Image Search also shows that most diagrams on the subject involve one parent producing 2 daughter cells.