Jackie's Old-Fashioned Raspberry Crisp

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C). Grease a 9-inch baking dish.

2 . Stage

Crush 1 cup raspberries with a fork. Place crushed berries in a 1-cup liquid measuring cup and add enough water to bring back to 1 full cup.

3 . Stage

Combine sugar and cornstarch in a saucepan. Stir in raspberry-water mixture and bring to a boil. Cook, stirring occasionally, until thick, about 2 minutes. Reduce heat to a simmer. Stir in remaining 3 cups raspberries; remove from heat and allow to cool.

4 . Stage

Meanwhile, combine oats, flour, brown sugar, and baking soda in a bowl. Cut in butter with 2 knives or a pastry blender until the mixture resembles coarse crumbs.

5 . Stage

Press 1/2 of the crumb mixture into the bottom of the prepared baking dish. Spread the raspberry mixture on top and sprinkle with the remaining crumb mixture.

6 . Stage

Bake in the preheated oven until the top is golden brown, 25 to 30 minutes.