For the Black Raspberry Filling

• 5 cups fresh or frozen black raspberries – Sweet and slightly tart, they’re the star of the dessert.
• ½ cup granulated sugar – Sweetens the berries without overpowering them.
• 2 tablespoons cornstarch – Thickens the berry juices into a luscious filling.
• 1 tablespoon lemon juice – Brightens the berry flavor.
• 1 teaspoon vanilla extract – Adds warmth and depth.
• ¼ teaspoon salt – Balances the sweetness.

For the Buttery Oat Topping

• 1 cup old-fashioned rolled oats – Creates the signature crisp texture.
• 1 cup all-purpose flour – Gives structure to the crumble.
• ¾ cup light brown sugar – Adds caramel flavor.
• ½ teaspoon ground cinnamon – Warm spice that pairs beautifully with berries.
• ¼ teaspoon nutmeg (optional) – Adds subtle warmth.
• ½ teaspoon salt – Enhances the overall flavor.
• ½ cup unsalted butter, melted – Binds the topping and creates a golden crunch.

Optional Garnishes

• Vanilla ice cream
• Fresh whipped cream
• Powdered sugar
• Fresh mint leaves
• Extra fresh black raspberries
• Chopped toasted pecans or walnuts