I'm a 'throw it all in' kind of girl.
I've got an electric pressure cooker so that helps a lot.
I've also got an onion chopper that chops into 5mm cubes, so any veg I'm not keen on get chopped through that so that (in most cases) they'll 'melt' into the gravy.
I'll usually grab a bag of frozen beef or chicken cubes in Asda for about £3.70, some onions, carrots, maybe a parsnip and leeks, (you can add other veg too if you choose), a tin of baked beans, a couple of dessert spoons of pearl barley, maybe 1 dessert spoon of red lentils, a teaspoon of mild curry powder, a splash of Worcestershire sauce, half a teaspoon of garlic granules or a couple of crushed cloves, maybe a few potatoes (to save doing them separately) and a few stock cubes, then just throw it all in the pot, press the 'stews' button, change the time to maybe 45mins and when it beeps to say it's done, I add a couple of teaspoons of corn flour that's been mixed with a little cold water and put the pot back on for 5-10mins and voila! One loverly hearty stew.
You could do this in a slow cooker but it would take several hours or throw it into a big pan and cook it on the stove for maybe 2hrs.