Healthier lunch, sorta

I grilled some lamb loin chops last night, had one of the leftovers for lunch today - it was kinda like eating a miniature T-bone or Porterhouse, 4.5oz before I cooked it, these were Australian lamb and honestly, tasted just like beef. I grilled some mushrooms & pan seared some green beans, and the mash is actually lentils. They went from "undercooked" to "heavily seasoned mashed lentils" in the blink of an eye, does anyone have a good recipe & process for lentils, because they are fairly new to me and come out that way every time.
-Lamb - internet says ~220cals, I'm going with that for now
-Mushrooms -35cals prob less since there were not a ton leftover
-green beans - 31cals I guess?
-lentils 170cal - this started out as roughly 1.6oz of raw lentils
-evoo -120
Total: 576 - a little more than I was aiming for, lentils are more calorically dense than I thought, maybe I'd have them as the main protein source if I were going meatless, that or just have a smaller portion, but I'm going to finish what I've cooked anyways.
Still trying to eat less & move more.

I just finished "The Ballad of Songbirds & Snakes" which I very much enjoyed, but it's time to jump back into something I haven't read in a very long time; don't panic, I've got my towel.