1. In a bowl, stir together the ground crackers, the brown sugar, and the butter until combined. Press evenly onto the bottom of a 15 x 10 baking sheet. Place in a preheated 375 degree oven for 10 minutes. Take out and let cool for 15 to 20 minutes.
2. Mix the eggs and sugar until the sugar has dissolved. Then add the pecans, chocolate chips, condensed milk, and oats to the egg mixture and bring together. Pour 0nto the crust and bake for 25 to 30 minutes.