d suggest you learn some easy recipe and make your own meals from
raw ingredients. You should use complete
protein source(fish, meat, eggs). Add more cooking oil in the cooking process to get more calories.
For dinner, it depends how hungry you are. If you're hungry then it's the same thing as for lunch. If you're not hungry, have a snack. Good one is can of baked beans and crisp bread with butter.
I recommend you eat nuts or eggs and dairy products before bed.