
Preheat oven to 180C/350F (160°C fan).
Butter and line a 20cm / 8" spring form pan.
Melt chocolate and butter in microwave in 30 second bursts, stirring in between until smooth.
Whisk in sugar. Add eggs and vanilla, whisking well until combined,
Switch to wooden spoon. Add cocoa powder, baking powder and almond meal, fold through until just combined.
Pour batter into pan, bake 45 min until top has thin crust and skewer comes out clean, not smeared with batter.
Cool cake in the pan for 10 minutes, then remove sides. Cool completely on rack before carefully removing base.
Dust with cocoa powder then serve. I served mine with strawberries and dollop cream, but it doesn't need it!