PREHEAT oven to 350º F. Grease and flour 9-inch springform pan.
COMBINE flour, baking powder and salt in small bowl. Beat butter and sugar in large mixer bowl on medium speed until light and fluffy. Mix in Choco Bake. Add egg yolks, one at a time, beating well after each addition. Add milk and vanilla extract; mix well. Stir in flour mixture. Beat egg whites in small mixer bowl until stiff peaks form. Fold beaten egg whites into chocolate mixture until no white streaks remain. Fold in macadamia nuts. Pour into prepared pan.
BAKE for 35 minutes or until wooden pick inserted in the center comes out clean. Cool completely in pan on wire rack.
FOR TRUFFLE MOUSSE:
PLACE water in medium saucepan. Sprinkle gelatin over water and let stand for 2 minutes. Add butter and Nescafe. Heat to boiling over medium heat, stirring frequently, until butter is melted and gelatin is dissolved.
PLACE morsels and sugar in food processor. Process until blended; pour in gelatin mixture while processing. Process until chocolate is melted. Add egg yolks and brandy; process until smooth. Return mixture to saucepan. Cook over medium heat, stirring until mixture thickens. Transfer mixture to large bowl. Refrigerate until thickened; stirring often. Reserve 1/4 cup of chocolate mixture, place in resealable plastic bag; refrigerate.
POUR 1/2 of remaining chocolate mixture in bowl over brownie. Insert waferrolls around top edge of mousse, touching edge of pan.
BEAT cream in small mixer bowl until stiff peaks form. Fold whipped cream into remaining chocolate mixture in bowl until no white streaks remain. Spread cream mixture over chocolate mixture. Cut a small hole from corner of bag of reserved chocolate; squeeze to drizzle over cake. Refrigerate for 4 hours or until firm. Garnish with strawberries, if desired. Remove side of pan.