In a medium bowl, combine flour and 3/4 cup brown sugar. Using a pastry blender, cut in butter until mixture resembles coarse crumbs. Stir in 1/2 cup pecans. Press mixture evenly in bottom of a 13x9- inch baking pan; bake for 10 minutes.
In a medium bowl, combine cream cheese and sugar; beat at medium speed with an electric mixer until smooth. Add milk and vanilla, beating until well combined; pour over cooled crust. Bake for 15 minutes; remove from oven, and cool for 10 minutes.
In a medium bowl, combine remaining 3/4 cup brown sugar, corn syrup, melted butter, and eggs. Stir in remaining 1 1/2 cups pecans. Pour brown sugar mixture over cream cheese mixture. Bake for 40 to 45 minutes, or until center is set.