Here are a couple of links for recipes I've made and enjoyed today, that use almost entirely store cupboard ingredients. One's healthy and one's terrible for you but very yum! The first is for a very easy treacle sponge pudding made in the microwave in 3 1/2 minutes. You can find the recipe here. When it was cooked the sponge soaked up the syrup like a, er, sponge.
The second is for a very tasty, low fat lentil curry. The picture below is terrible (much more appealing pictures on the actually website!) but shows the big batch I made to freeze for work lunches - a dollop of curry and two tablespoons of rice. That recipe's found here.