chocolate oat squares

this recipe is from my good friend kelli. be careful they are super addicting!

1 c. butter, softened
2 c. packed brown sugar
2 eggs
2 tsp vanilla
3 1/2 c. quick cooking oats
2 1/2 c. all-purpose flour
1 tsp baking soda
1 tsp salt
1 14-oz. can sweetened condensed milk
2 TBS butter
2 c. milk chocolate chips
1/2 tsp salt
2 tsp vanilla

cream together 1 c. butter with brown sugar until smooth. beat in the eggs and 2 tsp vanilla. stir in the oats, flour, baking soda and 1 tsp salt. press 2/3 of the mixture in a greased jelly roll pan. set aside the remaining dough. combine the condensed milk, 2 TBS butter, chocolate chips and remaining 1/2 tsp salt in a large saucepan over medium heat. stir frequently until melted and smooth. remove from heat and add remaining 2 tsp vanilla. spread over the prepared crust and sprinkle with the reserved dough. bake at 350 for 25 minutes or until golden brown. cool completely before cutting into squares.