Raspberry Filling

Directions

1. 1
   Combine raspberries, sugar, 3/4 cup water, and lemon juice in a saucepan; bring to a boil. Reduce heat to medium-low and simmer until reduced, 15 to 20 minutes. Remove saucepan from heat and strain through a fine-mesh strainer into a bowl. Pour mixture back into the saucepan.
2. 2
   Mix remaining water and cornstarch together in a bowl until dissolved; add to raspberry mixture. Bring mixture to a boil; cook, stirring occasionally, until thickened, about 5 minutes. Cool filling in refrigerator, at least 30 minutes.