Berry Cobbler Filling in 35 Minutes

Instructions:

1. In a large bowl, combine the berries, sugar, lemon juice, and lemon zest. Toss gently with a spatula and let the mixture sit for 10 minutes to allow a natural syrup to form.
2. Sprinkle the cornstarch, cinnamon, and salt over the macerated berries, folding them in carefully to avoid crushing the fruit.
3. Transfer the mixture into a medium heavy-bottomed saucepan over medium heat.
4. Cook the filling for 5–8 minutes, stirring occasionally, until the liquid transitions to a translucent, glossy syrup that coats the back of a spoon.
5. Remove from heat and stir in the vanilla extract and melted butter for a velvety finish.