Complex sentence: In previous centuries, before muffin tins were widely available, the cakes were often baked in individual pottery cups, ramekins, or molds and took their name from the cups they were baked in.
Split into simpler sentences: In previous centuries, before muffin tins were widely available, the cakes were often baked in individual pottery cups, ramekins, or molds. They took their name from the cups they were baked in.