Ingredients
Equipment
Method
Instructions
- Preheat your oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper, leaving some overhang on the sides to act as handles.
- In a medium bowl, whisk together the flour, sugar, and salt. Add the cold, cubed butter and the vanilla extract. Using a pastry cutter or your fingertips, cut the butter into the flour mixture until it resembles coarse crumbs with some pea-sized pieces of butter remaining.
- Press about two-thirds of the crumb mixture firmly and evenly into the bottom of your prepared pan. Bake for 15-18 minutes, or until the edges are just lightly golden.
- While the base is baking, combine the frozen raspberries, sugar, cornstarch, and lemon juice in a small saucepan. Cook over medium heat, stirring frequently, until the mixture thickens and bubbles, about 5-7 minutes.
- Remove the crust from the oven. Carefully spread the warm raspberry filling evenly over the hot base. Sprinkle the remaining one-third of the shortbread crumb mixture over the top of the filling.
- Return the pan to the oven and bake for another 25-30 minutes, or until the crumble topping is golden brown and the filling is bubbly around the edges.
- Let the bars cool in the pan on a wire rack for at least 1 hour, then transfer them to the refrigerator to chill for another 2 hours, or until completely firm. Do not try to cut them while they are warm.
- Once the bars are fully chilled and firm, melt the white chocolate chips (with the coconut oil, if using) in the microwave in 30-second intervals, stirring in between, until smooth. Drizzle the melted chocolate over the bars. Let the white chocolate drizzle set before using the parchment handles to lift the block out of the pan and cut it into squares.
Notes
For the best results, use very cold butter and do not overmix the dough to ensure a crumbly texture. A parchment paper sling in the pan is highly recommended for easy removal. The most crucial step is to cool the bars completely (1 hour at room temperature, 2 hours in the fridge) before cutting to get clean squares. Substitutions: Other berries like blackberries or cherries can be used. Dark or semi-sweet chocolate can replace white chocolate. Chopped nuts can be added to the crumble.
