01 -
Preheat oven to 375°F (190°C). Coat six 4-ounce ramekins with nonstick cooking spray and place them on a baking tray.
02 -
In a food processor, combine butter, baking soda, salt, both sugars, eggs, vanilla, and flour. Pulse until just blended. Add prunes and hot water; pulse until nearly smooth.
03 -
Spoon the batter into the ramekins, filling about two-thirds full. Bake for 18 minutes until firm and springy to the touch. Remove and cool slightly.
04 -
In a saucepan over medium-high heat, combine butter, cream, brown sugar, and salt. Whisk continuously until bubbling. Lower heat and simmer for 3–4 minutes until thickened.
05 -
Slice each cake horizontally. Place bottoms back in ramekins, drizzle with sauce, add tops, and drizzle again. Broil for 1–2 minutes until bubbling and sticky.
06 -
Turn out cakes onto plates, drizzle with extra sauce, and serve with whipped cream or a drizzle of heavy cream.
07 -
For a single cake, bake in a greased 8×8-inch dish. Bake for 15 minutes, tent with foil, and bake another 15 minutes until a tester comes out clean.