Two ideas:
1) A few weeks ago, I made this recipe by Gale Gand I found on the Food Network site for Strawberry-Rhubarb Slump:
http://www.foodnetwork.com/food/recipes ... src=search
It was really good and I bet you could substitute black raspberries for strawberries. You could also do a side-by-side slump with the last strawberries of the season (which would make a nice color contrast). I used vanilla ice cream from Bobtail instead of the whipped cream.
2) I made a strawberry semifreddo last week with some berries from Nichols Farms. Served it with a lavender shortbread cookie--both of those are really easy to make. I use Mario Batali's Meyer Lemon Semifreddo recipe and, what I did with the strawberries--which would work for the raspberries the same--is just substitute raspberry for anything lemon, mashing up the raspberries to varying degrees to get some juice and some texture. I also reserved some raspberries for a sauce, slightly sugared and salted them, and poured over the top. Recipe available at:
http://www.babbonyc.com/dolci-lemonsemi.html
You could also just make the lemon semifreddo and do a raspberry sauce instead of the suggested huckleberry sauce.
Gale Gand conveniently has a lavender shortbread cookie recipe online, which looks a lot like the one I use:
http://www.foodnetwork.com/food/recipes ... src=search
cjk
Homer: Oh, God, why do you mock me?
Marge: Homer, that's not God. That's a waffle that Bart threw on the ceiling.
Homer [contemplatively, to waffle]: I know I should not eat thee, but...[takes bite]
...Mmmmmm. Sacra-licious.