Dinner for Two

Most slow cooker recipes are written for six people, and most of them scale down badly.
The problem is not arithmetic. Halving the ingredients does not halve the cook time, and it often ruins the result. A slow cooker relies on a certain fill level to hold temperature and humidity, and a half-full pot behaves differently from a full one. Meat sitting above the liquid line dries. A small piece of brisket in a seven-quart cooker will finish long before the recipe says and be stringy by the time you check on it.
Air fryers have the opposite issue. They scale down beautifully, which makes them the better tool for two people most nights.
What actually works for two
The recipes collected here fall into three groups. Air fryer dishes that were always single-batch sized. Slow cooker recipes cooked in a small vessel, three quarts or under, where the fill ratio still holds. And full-size slow cooker recipes cooked deliberately for leftovers, portioned and frozen on the same day.
That last category is worth taking seriously. A pork shoulder is cheaper per pound in a large piece, and it freezes and reheats better than almost anything. Cooking eight portions and eating two is often more sensible than trying to cook two.
Adjustments that matter
Reduce the liquid further. A half batch in a full-size cooker needs proportionally less liquid than the halved amount, because evaporation stays near zero regardless of quantity.
Check earlier than the recipe says. Start probing at two thirds of the stated time. Small pieces finish sooner and there is no way to reverse an overcooked one.
Consider a smaller cooker. If two is your normal, a three-quart cooker is a better tool than a large one running half empty, and it costs very little.
Every recipe here notes hands-on time separately from total time, and states the vessel size it was cooked in.