Chocolate Brownie mix in a jar

I'm sure these aren't a new idea, but I saw them a couple of weeks ago at a Christmas fair and thought they were a good present idea. I have a few spare Kilner jars in my cupboard and had most of the ingredients required to make up the jar. I'm waiting for some walnuts to top the jar up. They are very quick to make and I think a really nice present for someone who loves chocolate brownies. The recipient just adds the eggs and melted butter to the mix and bakes. Certainly not too late to put together now if you are struggling for present ideas for Christmas, or in fact any occasion. 


Ingredients
Makes 16
In the Jar:
1/2 tsp salt
1/2 tsp baking powder
95 g plain flour
35 g cocoa
75 g plain flour
135 g brown sugar
150 g sugar
100 g chocolate chips
100g white chocolate chips
50 g walnuts or pecans (optional)
Plus:
150g melted butter
3 beaten eggs

Method
Layer the dry ingredients in a one litre jar, following the order above, from top, starting with the baking powder and flour. Press each layer down before adding the next. The amounts given should exactly fill a one litre jar.
Give to your friend :) Remember to include a tag with the following instructions

For the tag: Combine the contents of the jar with 150g melted butter and 3 beaten eggs. Mix well, and pour into a lined 9 x 9 inch tin. Bake at Gas 4 / 180 C (160 fan) / 350 F for 25-35 minutes.