That is also my shape. If my weight goes up, it is around my tummy area.
If your flat backside is a problem for you, then there are a few options. One is to wear padded panties; these will give your derriere more definition. Jeans with large rear pockets with help disguise the lack of fullness. Often you can find jeans with large decorative stitching on the back pockets.
If neither of those options appeals, longer shirts are stylish.
You don't mention if you are high waisted or not. For an apple shape, I wouldn't go for a low rise pair, as any excess around the tummy area will spill out.
Also, you cold try a relaxed fit or a normal rise bootcut style.