Campfire stew is nice and pretty cheap!
Small gammon joint (or gammon steaks!) from Aldi around 3 quid. Put in slow cooker and add chopped peppers, sliced mushrooms, tin of sweetcorn, chopped tomatoes, passata and a tin of baked beans. Add paprika and chilli flakes.
Cook overnight (or all day) on medium then shred the gammon joint.
Really hearty and will do 2 days. Serve with rice to make it last 3 days or on its own. Could even be used to stuff peppers with a little cheese on top and baked in the oven.
Or could make similar without the gammon and bulk out with chickpeas and lentils? That would be very cheap but still tasty! Could add chopped bacon?
Corned beef and potato pie is pretty cheap and filling! Especially using the ready rolled pastry (it's a pound). Tin of corned beef around 1.50. Boil potatoes, mash and season with black pepper and a little salt. Add corned beef and mash together. Roll the pastry into two halves and cover a plate with one. Fill with the mixture. Cover with the other half of the pastry and cover with an egg wash. Bake in oven for around 20 mins.
Bacon and egg pie works too! Chop up bacon and spread over the pastry. Whisk up 3 eggs and pour over the bacon. Add pastry lid. Egg wash. Oven for 25 mins.
Pork mince in Aldi is only 1.99 and tastes no different in a chilli! Passata, chopped tomatoes, kidney beans (or baked beans) and chilli flakes. Can be bulked out with lentils/more beans).
I use passata as a pasta Sauce with frozen veg, paprika and chillli.
Pesto pasta with peas and broccoli is a winner in our house!