Halloumi cheese substitute

I have a recipe for a turnip onion potato casserole that calls for Halloumi cheese. The cheese is placed on top after cooking and then placed under the broiler. What can I use as a substitute cheese

From foodsubs.com

"Haloumi = Halloumi Pronunciation: hah-LOO-me Notes: This salty, crumbly cheese from Cyprus stands up well to heat and can even be fried or grilled. Look for it in Middle Eastern markets. Substitutes: feta (similar flavor) OR mozzarella (similar texture) "

Hope this helps.