Pasta is easy, too.
We have a couple cheap, easy ones we do. A favorite is to pan fry some chopped up bacon and once cooked a bit, toss in a couple handfuls of halved cherry tomatoes. Once the tomatoes go a bit soft, toss with pasta of your choice. If you like it 'saucy-er' you can add some passata but you'll need to season more.
If you like spinach, you can cook a big pan of that, whizz it down with a handheld blender, mix in some cream and parmesean cheese and toss with pasta.