Preheat your oven to 350 degrees. Butter 6 four inch mini cast iron skillets or a 13x9 baking dish.
In a three quart saucepan, over very low heat, melt the butter and chocolate together until the chocolate is just melted. Remove the pot from the stove and let it cool to room temperature.
When the chocolate mixture has cooled, beat the eggs and add them to the pot. Then, add the sugar and vanilla. Fold in the flour until it's just combined. Do not overbeat.
Divide the batter between the skillets and bake for about 12 minutes, or until a toothpick comes out clean. Cool on a rack.
In the bowl of an electric mixer, beat the cream until it's thick and fluffy. Serve the warm brownies topped with whipped cream and strawberries.