→ Berry Filling
01 - 1.3 pounds mixed frozen winter berries (blackberries, blueberries, raspberries, redcurrants)
02 - 1/3 cup granulated sugar
03 - 1 tablespoon cornstarch
04 - 1 teaspoon vanilla extract
05 - 1 tablespoon fresh lemon juice
→ Oat Crumble Topping
06 - 1 cup rolled oats
07 - 2/3 cup all-purpose flour
08 - 1/3 cup light brown sugar, packed
09 - 1/4 cup unsalted butter, cold and cubed
10 - 1/3 cup sliced almonds
11 - 1/2 teaspoon ground cinnamon
12 - Pinch of salt