We eat this a lot, sometimes using beef or chicken, and find this an easy dish when we want a quick curry fix.
You can add a couple of peeled, diced pootatoes and about 2 cups of water for the final 30 minutes of cooking.
I make lots of variations on this. Sometimes I add tomatoes or sun-dried tomatoes,croutons, cucumber, red onions, pine nuts, olives-whatever is on hand and needs using. Prep time includes 30 minutes marinating.
I was given buharat spice mix for Christmas. Now I'm searching for ways to use it. I haven't made this, but I will. I'm a bit dubious of the long cooking time for the shrimp, and the amount of liquid for the rice, but I'll let you know. I also posted a recipe for the spice mix, similar to the one I was given.