Step 3: 1. Take the spaghetti and follow the instructions on the packet to make up.
Step 4: 2. Once cooked, drain off the water.
Step 8: 1. Set oven to 200oC and leave to warm up whilst ya doing the rest.
Step 9: 2. Chop up all the bacon into squares and cut the onion into cubes. do the same to the mushrooms
Step 10: 3. Place these into a frying pan and cook until they all look a golden colour.
Step 11: 4. Empty the sauce into a saucepan and add the bacon and the onion.
Step 12: 5. Heat the sauce until the sauce is hot.
Step 16: Grate the entire block of cheese.
Step 20: 1. Once all layers are ready take the caaserole dish and layer each layer in turn. 1 then 2 then 3. Keep this up until the dish is full. Use the last of the cheese to cover the top layer.
Step 22: 2. Put the lid of the casserole dish on and place in the oven for 30 to 45 minutes.