Directions:
- 1Weigh or spoon flour into dry measuring cups; level with a knife. Sift together flour, cocoa, espresso powder, baking powder, and salt. (I don't have a sifter, so I used a wire whisk.).
- 2Place butter in a large bowl; beat with a mixer at medium speed 1 minute. Add granulated and brown sugars, beating until well blended (about 5 minutes). Add egg substitute and vanilla, beating until well blended. Fold flour mixture into sugar mixture; fold in chocolate.
- 3Divide batter evenly among 10 (4-ounce) ramekins; arrange ramekins on a jelly-roll pan. Cover and refrigerate 4 hours or up to 2 days. (Longer is better. You can refrigerate longer hand 2 days.
- 4Preheat oven to 350° (325° for convection ovens).
- 5Let ramekins stand at room temperature 10 minutes. Uncover and bake for 21 minutes (18 minutes in a convection oven) or until cakes are puffy and slightly crusty on top. Sprinkle evenly with powdered sugar; serve immediately.