Preheat oven to 325°. Line a greased 15x10x1-in. baking pan with parchment paper; grease paper.
In a microwave, melt chocolate and butter; stir until smooth. Cool slightly. In a large bowl, beat eggs and sugar until blended. Stir in vanilla and chocolate mixture. In another bowl, whisk together flour, baking soda and salt; gradually add to chocolate mixture. Spread into prepared pan.
Bake until a toothpick inserted in center comes out clean, 15-20 minutes (do not overbake). Cool 10 minutes before removing from pan to a wire rack; cool completely.
Meanwhile, for topping, melt 1 ounce chocolate in a microwave; stir until smooth. Dip each apricot piece partway in chocolate, allowing excess to drip off; place on waxed paper until set. In a food processor, puree preserves just until smooth.
Cut brownie into four 7-1/2x5-in. rectangles. Spread preserves over two rectangles; top with remaining rectangles. Freeze, covered, 20 minutes. Cut each portion into 12 squares; cut squares diagonally into triangles.
Place cream, butter and remaining chocolate in a microwave-safe bowl; microwave at 50% power 1-2 minutes or until smooth, stirring twice. Cool slightly, stirring occasionally. Drizzle over brownies. Top with dipped apricots.