Grease a 25cm round cake tin liberally with butter
Cook the popcorn in the microwave according to the instructions on the packet
In a large saucepan, over a gentle heat, melt the butter, marshmallows and toffees together, stirring occasionally
place the popcorn, peanuts, pretzels and sweets in a large bowl, pour the melted marshmallow mixture over the popcorn mixture and mix well
Press into the cake tin, smooth the top and set aside to cool at room temperature, until firm
Remove from the tin and cut with a serrated knife
12 servings