Mississippi Mud Pie

1 1/2 cups of chocolate cookie crumbs
1/3 cup of melted butter
1 cup of granulated sugar
1/4 cup of unsweetened cocoa powder
1/2 cup of melted butter
2 large eggs
1 teaspoon of vanilla extract
1/4 cup of all-purpose flour
1 cup of chopped pecans
1/2 cup of mini marshmallows
1 bar of semi-sweet chocolate, melted