Here is another really simple, really cheap, yummy dessert I make alot.
1 sponge cake (I buy the .97 box of it, and make my own)
1 large tub cool whip, or dream whip (get whatevers cheapest and what you got coupons for)
1 bag or tub of strawberries (either get a frozen bag, or fresh tub, your choice)
1 container strawberry glaze
2 small boxes of vanilla pudding ( I buy the cheap instant stuff)\
Make pudding, then tear the cake into small pieces. Place cake on bottom of a large pyrex baking dish, then put the pudding on top of that, next place strawberries and glaze ontop of pudding, now put your coolwhip on top of that, mmm mmm.. yummy dessert and really easy. Look at the pic of mine