Preheat the oven to 350° F (180C). Line a 9x9-inch (22cm) baking pan with parchment paper, then lightly grease with cooking spray or a wipe of olive oil.
Using a double boiler, melt the chocolate and olive oil. Whisk in the sugar and prune purée and mix until dissolved.
Sift the flour, baking powder, and cocoa powder into a large bowl. Gently fold in the chocolate and prune mixture, then add the vanilla.
Spread the batter in the prepared pan, sprinkle with flaky sea salt, and bake 20-25 minutes, or until the top starts to look dry and the brownies are just beginning to pull away from the sides of the pan.
Cool in the pan. Remove, then cut the brownies into 3-inch (about 7 cm) squares and serve!
Video
Notes
How to make Prune PureePrep time: 5 minutesYields: 1 cup (250 ml)16 ounces (450 g) pitted California prunes1/2 cup (125 ml) hot water Combine the prunes and water in a blender. Pulse to combine, then blend until smooth, pourable consistency forms, scraping the sides if necessary.Store the purée in an airtight container in the fridge for up to 4 weeks.Serving Suggestion: If chocolate + prunes are one of your favorite flavor pairings, be sure to try our Chocolate Covered Prune Fudge Cake!