One of my favorite deserts in the past month (and I've got several.... the five pounds hanging around my tummy agree) is fruit crumble. I found a recipe online here and I'm just going to tell you the shortened version.
First you start with some fruits. I did rhubarb and strawberry. You could pretty much add what you have in your fridge. As long as their fruits. If you add meat or bread, that might be nasty. Just warning you!
Another time I made this I had a few raspberries left over, and I threw those in along with the strawberries and rhubarb. Now, depending on the fruits, add some sugar. For fruits that are more sweet (like strawberries and blueberries) you can add less sugar - maybe 1/4 or 1/2 a cup or so. For fruits that are more tart (rhubarb) add more sugar.
Next you take a lemon and grate a bit of the rind then squeeze the juice out of it. You'll also want to add a bit of cornstarch to the fruits. This will make them a bit thicker - not so runny after its cooked.
For the crumble part, you mix flour, sugar a bit of salt and some melted butter. I also add just a pinch of cinnamon for flavor (or you could add some lemon, too). Dig your fingers in there and mix it up.
Place on top of the berries/fruit. Bake until the top is brown and the fruit is all bubbly and warm. Yummy!
And very easy too. Now go make one!