Begin by preheating your oven to 350°F (175°C), allowing it to warm up while you prepare the ingredients.
In a medium mixing bowl, combine the hulled and sliced strawberries, fresh blueberries, and delicate raspberries. Drizzle with freshly squeezed lemon juice and your choice of honey or maple syrup. Gently toss the berries to ensure they are well coated and set the mixture aside to let the flavors meld.
In another bowl, mix together the rolled oats, all-purpose flour, packed brown sugar, ground cinnamon, and a pinch of salt. Stir until evenly combined.
Add the cubed cold unsalted butter to the dry oat mixture. Using your fingers or a pastry cutter, blend until the mixture achieves a texture resembling coarse breadcrumbs, ensuring that the butter is well incorporated into the dry ingredients.
Lightly grease an 8x8-inch baking dish, then spread the berry mixture evenly across the bottom, creating a colorful layer.
Generously sprinkle the crumbly oat topping over the berry layer, ensuring an even distribution that completely covers the berries.
Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the topping is a rich golden brown and the berries are bubbling joyfully around the edges.
Once baked, carefully remove the crisp from the oven and allow it to cool slightly, just enough to set before serving.
Notes
Serve warm with a scoop of vanilla ice cream and a sprig of fresh mint for garnish.