Why would you cook it on low heat?#
It won't even cook at that temperature so how would you even get ''Medium-Rare''?
I grilled my steak on HIGH heat 6 minutes / side and it came out RARE
So I really don't believe you in this post. That can't properly be cooked.
From the picture I can see, in my opinion you WAY over seasoned it. You have to remember that the meat is the star of the show here, not the seasoning that takes away from the tender cut of that Top Sirloin steak you have? Did I get it right?
All meat needs is a little salt and a little pepper before cooking. NOT after, some people would do it after, and it just doesn't bring out the flavor.
Anyway right now my favorite cut of meat is a strip steak. They are easy to cook, look beautiful and uniform when cooked. I've tried many other types of steak, tenderloins, t-bone, porterhouse, strip, ribeye, top sirloin, flank, skirt, all good for different things.
Source. I work with meat all day. I am a butcher.