Here are the easy recipes I know, salt and pepper to your taste (and of course you can tweak it as you want, only the bolded ingredients are necessary):
Quiche
Ingredients: Eggs, cottage cheese, any ground meat, any non-root veggies.
Mix 2-3 eggs with 3 spoons of cotton cheese. Cook some meat and veggies in a pan and add it to the mixture. Pop the whole thing in a oven (200 C or 400 F) for about 10-15 minutes (preheat it before you start).
Hamburger (without the burger)
Ingredients: Any ground meat, lettuce, pork rind.
If you have some (can be found as snacks in the meat section in the supermarket), crush some pork rind and mix it with your meat to bind it. Form the meat into a patty, fry it in a pan. Wrap it in a big leaf of lettuce and you're allowed to use mayo, but no ketchup.
Pizza (credits to the person with the duck avatar who shared this once on GAF)
Ingredients: Eggs, shredded cheese, tomato puree, any ground meat, any non-root veggies.
Mix 2 eggs with some water and shredded cheese. Fry it in a pan (should end up as a thin pancake-like base). Put it on a plate, spread some tomato puree on it and top it with some meat and veggies. I don't recommend any form of salami because then you have too much salt from the cheese + salami. Top it off with some more shredded cheese and pop it into the oven.
Spaghetti
Ingredients: Shirataki noodles, any brand spaghetti sauce with low amount of carbs, any ground meat, veggies, shredded cheese.
You can get shirataki noodles from online stores in good quantities. Rinse the shirataki noodles before using it to remove the strange smell (no more there after rinsing it). The noodles don't really require cooking, so just pop it boiling water for 2 minutes while you prepare the spaghetti sauce. I recommend adding a lot of veggies and meat to the sauce because the shirataki noodles are pretty flavorless. Top it with cheese if you want.
Yoghurt dessert
Ingredients: Greek yoghurt, dark chocolate (higher % is better).
Get a bowl that can be heat up. Drop like 2 cubes of chocolate and hover that bowl on warm water (I usually do it from the tap) and move the cubes a bit with a spoon to melt it. Spoon in some Greek yoghurt and.. eat it with the same spoon
Filled Bell Peppers
Ingredients: Bell peppers, any ground meat, pork rind.
If you have some (can be found as snacks in the meat section in the supermarket), crush some pork rind and mix it with your meat to bind it. Cut the bell peppers into half, remove the seeds, fill the bell peppers with the mixture and fry it in a pan, meat-side down. Use plenty of your favorite spices and also salt generously. Once the meat is done, you can pop it into the oven for a few minutes to make the bell peppers becomes nice and soft (don't burn the skin though).
I don't cook a lot though, I'm generally fine with a fast omelet, or eating a whole plate of just broccoli or cauliflower. And I don't really have recipes for fish and steaks, since I just cook it with salt and pepper and some spices and I can eat it as is (nothing special to do with that).
