While going through my husbands mothers and grandmothers recipe collections, I found a recipe for rhubarb/strawberry bars. It was very good. Later, somewhere, I found a recipe for Pastry Shop Cheese slices with a pineapple filling. It was very good. Ah, but I bet they would be much better with black raspberries. They were. However, there were certain aspects of each recipe that we preferred, so I included those parts we preferred to make the above recipe.
Black raspberries have a very short shelf life. They are almost impossible to find fresh and since I have a 40 year old patch, I don't know how hard they are to find frozen.
Also, my husband says I have to warn anybody who has never worked with black raspberries, that one raspberry can stain a lot of things and go a long way.
I rarely bring home more than 2 or 3 pieces of this desert from any get together I have taken it.

Step 1: Black Raspberry Cheese Bars

Equipment:

9 by 13 inch baking dish
3 bowls
2 quart pan with lid
Liquid measuring cup
Dry measuring cups
Measuring spoons
Spatula
Wooden spoon(because my husband won't let me use metal spoons in the pan)
Electric hand mixer

Step 2: Black Raspberry Cheese Bars

Ingredients

Flour
Granulated sugar
Cornstarch
Oatmeal
Brown sugar
Baking soda
salt
Lemon Juice
Water
Almond extract
Eggs
baking spray
Small curd Cottage Cheese
Cream cheese
Butter

Step 3: Black Raspberry Cheese Bars

Raspberry Filling:

3 1/2 to 4 cups of raspberries
1 Tablespoon lemon juice
1/4 cup water
1/4 cup granulated sugar
2 Tablespoons corn starch
1/2 teaspoon of almond extract

Combine raspberries, lemon juice and water in a 2 quart saucepan. Cover and cook over medium heat, stirring occasionally, until fruit is soft(5-8 minutes) Combine sugar and cornstarch in a small bowl. Stir into fruit. This leaves the raspberries a little tart, which is how we like it so if you have a sweet tooth you might want to add a little more sugar. Remember though that all other layers have sugar in them. Continue cooking , stirring constantly, until mix comes to a boil. Boil until thick(1 minute) . Remove from heat and place in refrigerator to cool.

Step 4: Black Raspberry Cheese Bars

Cheese filling

2 eggs
3/4 cup sugar
2 tablespoons flour
1 teaspoon almond extract
2 cups cottage cheese
8 ounce package cream cheese, softened

Combine all ingredients in medium sized bowl and mix until well combined. Place in refrigerator to cool and set slightly

Step 5: Black Raspberry Cheese Bars

Crust

1 1/2 cups flour
1 1/2 cups quick oats
1 cup firmly packed brown sugar
3/4 cup(1 1/2 sticks) soft butter
1/2 teaspoon baking soda
1/4 teaspoon salt

Combine all crust ingredients into a large bowl. Beat at low speed until mix is crumbly.(I've been known to mix it with my hands)
Spray the pan with baking spray or grease and flour the bottom of the baking dish.

Step 6: Black Raspberry Cheese Bars

Preheat the oven to 350 F.
Reserve 1 1/2 cups of the crust. Spread the rest of the crust over the bottom and slightly up the sides of the dish. Spread the cheese filling over the crust. Carefully spread the Raspberry filling over the cheese layer. Sprinkle the reserved crust over the top of the filling.
Bake for 30 to 35 minutes or until nicely browned.