On the back of the "how much do your groceries cost" thread, I was asked to share a few of my recipes as I am a very frugal cook 
I will add some of my recipes, please feel free to steal them and add your own!
I'll start with cereal bars, excellent for packed lunches and snacks 
2 cups oats,
1 cup peanut butter (I use crunchy)
1/2 cup of honey (or golden syrup)
2 tbsp melted coconut oil
1/2 bag of linseed mix (aldi- 1.99 a bag, I like the one with goji berries)
2 tbsp butter
2 tbsp sugar
melt butter, coconut oil and honey in a mixing bowl in the microwave then add all the other ingredients and mix well then press into a small roasting tin lined with baking paper. Bake at 180 for 30-35 mins. Cut into squares/bars while warm then leave to cool before transferring to a tupperware box or freezer bag to store. They keep for about 2 weeks 
alternatively:
50g chocolate (I use whatever decent dark chocolate is cheap in home bargains but you can pick your own)
3 tbsp peanut butter
2 tbsp milk
1/2 cup oats
1 tbsp dessicated coconut
1 tbsp sunflower seeds
1 tbsp raisins
melt 1st 3 ingredients, add the dry ingredients and mix well. Press into bars/roll into balls and refrigerate