Blackberry Sweet Tart Filling

Step 1

In a large cooking pot, combine the berries and the sugar. Since frozen berries have a fair amount of liquid, don't add any water. However, if you are using fresh berries, add half a glass of water.

Step 2

Cook over medium heat, stirring occasionally until mixture is somewhat thick.

Step 3

Mix the cornstarch with just enough water to make a soft paste that can be poured.

Step 4

Turn your burner down low and very slowly pour the cornstarch into the blackberry mixture, continue stirring for a minute or two.

Step 5

The mixture will get real thick. Turn the burner off but keep stirring for a few minutes longer. The mixture will look like a thick jelly.

Step 6

Use to fill tarts or make a fresh cobbler.