I found this super easy recipe here. What a treat and so easy to make. my sister and I used to go to Flemings Steakhouse at least once a month, just for their lava cake. Well, no need for that anymore. This one tastes exactly the same and of course the better the chocolate the better the cake. I slightly overcooked mine by a minute or so. It's supposed to be more runny in the middle.
2 sticks of butter
1 1/3 semisweet chocolate chips
5 large eggs
1/2 cup sugar
4 tsp flour
1. Preheat oven to 450 F.
2. Melt butter and chocolate chips in a pan, over low heat, stirring frequently.
3. Beat eggs and sugar well. Add melted chocolate mixture very slowly (careful that eggs don't scramble). Mix well together.
4. Add flour, stir 'til just combined.
5. Pour into 8 greased 10 oz ramekins. Bake 8-10 min.
I used a non stick 6 opening bunt cake tray, which I didn't have to grease. The cakes came right out. I cooked them for 11 min, which was tooooooooooo long. Results were still delicious though.