Preheat oven to 325. Grease and flour a 9×13 pan

In a large bowl sift together flour, soda and salt. Set aside.

In large mixing bowl, beat together softened butter and brown sugar until light and fluffy.

Add eggs, one at a time and beat until combined. Add vanilla and mix well.

Slowly add the sifted flour mixture and mix until combined. Stir in oatmeal.

Gently spread 2/3 crust into bottom of prepared pan. Reserve the rest for topping.

Make the filling:
Over Medium-Low heat, melt together chocolate chips, sweetened condensed milk, 2 tablespoons butter, and salt. Stir until smooth. Remove mixture from heat and stir in vanilla and nuts if using.

Evenly pour filling mixture of crust but keeping filling about a 1/4 inch away from side of pan so it does not stick to side while baking. Evenly dollup top of filling with remaining oat mixture. Bake for 30-35 minutes or until topping is light brown and fudge layer set but not solid. Don’t overbake these bars or they can become dry.

Cool in pay on rack until set before cutting. Can chill to set faster. Keep stored in airtight container either room temp or in fridge.