Oatmeal Cookie Bars with Peaches and Crème Frosting

INGREDIENTS

Eggs, large

1 1/2 cups

Oats, quick-cooking

1/2 cup

Brown sugar, packed light

1 16.5 ounce package

Cake mix, yellow

package Duncan hines peaches and creme flavor mix

1 tsp

Vanilla

1 cup

Pecans

1/2 cup

Butter, unsalted

1 can

Duncan hines frosting creations starter