2
Cover bottom of 9-inch springform pan with parchment. Beat 6 egg whites in medium bowl with mixer on high speed until soft peaks form; set aside. Beat butter and brown sugar in large bowl with mixer until light and fluffy. Add egg yolks, 1 at a time, mixing well after each addition. Blend in melted chocolate, vanilla and salt.
3
Add 1/3 of the egg whites to chocolate batter; stir gently just until blended. Repeat in 2 batches with remaining egg whites. Pour into prepared pan. Bake 30 min. Meanwhile, prepare Meringue Topping.
4
Combine chopped chocolate, nuts and cornstarch. Beat 4 egg whites in clean large bowl with mixer on high speed until foamy. Gradually beat in granulated sugar until soft peaks form. Gently stir in chopped chocolate mixture.
5
Remove cake from oven. Spoon Meringue Topping over cake, spreading to edge of pan to completely cover cake and seal meringue to edge of pan.
6
Once all the eggs are peeled, slice the eggs in half lengthwise, and carefully scoop out the yolks. Mash yolks with a fork (or push through a mesh sieve for a very fluffy, smooth filling) then stir in lemon juice, mayo, mustard and feta cheese until smooth, creamy filling forms. Spoon filling into egg white halves, or add filling mixture to a piping bag (or large ziploc bag) and pipe into filling for a more festive presentation. Top with roasted red peppers and serve!