Here is a great cricket food- it's the one I use during my cricket breeding:
1 pinch manufactured cricket food (dust)
Half of a brown banana
1 tsp white sugar
1 pinch Herptivite
Combine the ingredients. Make sure the bananas are squished, never chunky. Use approximately two tablespoons at a time in a clean food dish. After 6 hours, throw away any uneaten food and replace it with fresh food.