Chewy Chocolate-Oat Bars

Melt 1 c. chocolate chips with 1/3 c. evaporated milk and set aside.
In a bowl, mix well:
1/3 c. evaporated milk
2 eggs
1/2 c. canola oil
1 +1/2 c. brown sugar
2 t. vanilla
Then add to this mixture:
2 c whole wheat flour
1 c. quick oats
1 t. baking powder
1 t. baking soda
1/2 t. salt
Pat 1/2 of the dough into a greased jelly roll pan (may use 9X13, but bars will be thick and you will need to cook a little longer); spread chocolate mixture over the dough. Add 4 T. oats and 2 T. softened butter to remaining dough, mix and crumble over chocolate mixture. Bake at 350 for 20 to 25 minutes or until top is golden and firm. Cool completely.