Parabolic mirror
Easy one - take a parabolic mirror (e.g. a typical satellite dish, the one you can find in your kitchen and paint it shiny), put some heat resistant holder in the focus and there you go.
The heat in the focus can easily reach upper hundreds of kelvins (which is more than enough even for a grill) for a typical small (~1m) parabolic dish and you can regulate the temperature very easily. As a bonus, there is no air to take the thermal energy away. Add some water into an airtight (and strong) packing, and you get your classical boiled food (if fried/grilled is not for you).
If you do not have a satellite dish among the regular equipment in your kitchen, a huge metal ladle might do, or a pot cover, and you would be able to watch the TV cook.
Solar constant is about $1360\, \rm W\cdot m^{-2} $ [1] - that is (by definition) at 1 AU and outside of atmosphere (It's a total irradiation, not just inside the visible spectrum, but the maximum is in the visible spectrum anyway and polished metal surface would reflect IR and UV easily). 184
Typical high-end mirror reflexivity can reach 90%, if we allow for non-visible spectrum and lower efficiency, we can get $500\, \rm W\cdot m^{-2} $ easily (note that for low cost, less than perfect reflexive cookers in our atmosphere and realistic weather the efficiency is very low, [2] got only 15% maximum energy efficiency). A typical hot plate consumes maybe 1 kW of electricity and is perfectly adequate for cooking (and the efficiency is likely rather low as well). That means $2\,\rm m ^2$ is more than enough to replace a typical hot plate.
Note that solar cooking is not uncommon, especially in developing countries without proper access to electricity. See [3] for a detailed description and fields testing of solar cooking in Indonesia.
A typical pressure cooker operates at 2 atm - that means 1 atm overpressure, which is perfect for vacuum - keeping the same 1 atm overpressure will give exactly 1 atm pressure in the cooker, which means the conditions for cooking are exactly what we are used at. 108