Ultra-Rich Molten Chocolate

1 1/4 cups graham cracker crumbs
3 tablespoons light brown sugar
1/3 cup coarsely chopped pecans
6 tablespoons unsalted butter, melted
1 cup whipping cream
2 cups (12-ounce package) semisweet chocolate morsels
1/2 cup unsalted butter
1/2 cup milk chocolate morsels
3/4 cup granulated sugar
2 large eggs
1/2 cup flour
16 assorted-filled chocolate pieces*
18 pecan halves

Combine first 4 ingredients. Press into bottom of a buttered 9-inch deep-dish pieplate. Bake at 350° for 8 minutes or until lightly browned; cool.

Bring whipping cream to a simmer in a medium saucepan over medium heat. Remove from heat; add semisweet morsels, stirring until smooth. Spread mixture over crust; cover and freeze 30 minutes.

Melt 1/2 cup butter in saucepan. Remove from heat; add milk chocolate morsels, stirring until smooth. Add granulated sugar, stirring until smooth. Add eggs, 1 at a time, beating just until blended. Stir in flour just until combined.

Cut each chocolate piece into 4 pieces; fold into milk chocolate mixture. Pour mixture over chilled chocolate crust; sprinkle with pecan halves.
Bake at 350° for 45 minutes or until outer edge is set. Remove from oven; cool slightly on a wire rack. Serve warm.