Preheat oven 350°. Line a 13 x 9 baking pan with non-stick foil.
In large bowl combine flour, oats, ¾ cup sugar and butter; mix until crumbly. Set aside 1½ cups crumbs for topping, and press the rest into the prepared pan. Bake 15 minutes. Cool completely.
In large bowl beat cream cheese until fluffy, gradually mix in condensed milk, lemon juice, and vanilla until smooth. Spread over crust. In small bowl combine remaining 1 tablespoon brown sugar, cornstarch and cranberry sauce. Spoon over cream cheese mixture. Sprinkle reserved crumb mixture over top.
Bake 40 minutes. Let cool completely on wire rack, then chill before cutting. Store in refrigerator.
Recipe by Tout va bien! (tm) at https://christymajors.com/bloggerclue-cranberry-cream-cheese-dream-bars/