Use a double broiler to melt chocolate and butter together, stirring frequently. You can use microwave as well, just be careful not to burn.

Remove from heat

Add sugar into melted chocolate and butter, set aside to let cool

Stir eggs in, one at a time

Mix in flour

Butter a 9 inch round cake pan, and put parchment in bottom, butter the parchment

Fill cake pan

Bake in preheated 375 degree oven for 25-30 minutes, until only slightly jiggly in center

Remove from oven, cool in pan on rack for 10-15 minutes

Flip cake out of pan, peel off parchment

Flip back over

Let cool completely

Serve with whipped cream and fresh fruit