5ozdark chocolate or about 16 Dove dark squareschopped (140 grams)
⅔cuppacked light or dakr brown sugar(140 grams)
½cupunsalted butter, plus extra for ramekins(114 grams)
3largeeggs(150 grams)
1tspvanilla extract
⅓cupoat flour (45 grams), plus extra for dusting the ramekins
¼tspfine salt or a big pinsh of regular Kosher salt
Confectioners' sugarfor dusting
Instructions
Rub the insides of four 5-oz ramekins with softened and dust them with oat flour. If you don't have 5-oz ramekins, you can use four to six 6-oz custard cups. Whatever dish you use will most likely affect the baking time.
Combine the chocolate and butter in a microwave-safe mixing bowl and heat on high for 30 seconds. Stir. Repeat, heating on high for another 30 seconds, then stir. Repeat until mixture is melted and smooth.
Whisk in the brown sugar, then whisk in the eggs one at a time, followed by the vanilla, oat flour and salt.
Pour the batter into the ramekins and chill until ready to bake. This can be done up to two days in advance. If doing this far in advance, you should cover with a piece of plastic wrap. I made mine 2 hours in advance and didn't bother covering.
Preheat the oven to 400°F. Place the ramekins on a baking tray. If making 4 lava cakes and using the 5 oz ramekins, bake for 18- 20 minutes, or until the surface of the cakes has set. If using custard cups and making 6 lava cakes, pull the cakes at 13 to 15 minutes. They should appear set and may look overbaked at first.
Let the baked cakes rest for about 5 minutes.
Loosen around the edge of each ramekin and invert each onto a dessert plate. Sift powdered sugar over the tops and serve. Before serving, you can test one to make sure the lava is flowing. If overbaked, there will be no lava. If underbaked, there will just be a thinner shell and more lava. It's probably better to underbake than over-bake.