I sometimes make an olive oil, garlic and herbs rub for a lamb shank and let that sit for a couple of hours.
Baby potatoes, halved, in a sandwich bag with olive oil, lemon pepper, chopped rosemary and garlic granules, shook together and also ignored for a couple of hours if possible.
Lamb roasted long and slow, roasties added long enough to get properly crispy, and usually served either with cauliflower cheese or roasted Mediterranean veggies.
Or a proper curry - from frying onions, garlic and ginger .....
With proper puppodums and tomato salsa on the side.
Any leftovers can be frozen for another night (when solo or others here).
Or roasted chicken thighs, often with thyme and feta under the skin, olive oil and lemon juice pver the top, and some roast potatoes and some veg (maybe steamed French beans or sugar snap peas).
Or a proper risotto (sometimes using leftover chicken or lamb from a previous roast that I had frozen, or dried mushrooms, or a nice handful of fresh seafood...).
Occasionally a proper steak (I usually feel I need some iron) with wilted spinach and some red wine to drink.
I love treating myself when DD is gone off with DH (sports events, visiting DMIL etc,) and I often can’t go because I have Cub Scouts on Saturday’s. It doesn’t happen all that often, but enough that I have my few favorites.