1Heat oven to 350°F. Line 13x9-inch pan with foil, leaving foil overhanging at 2 opposite sides of pan; spray foil with cooking spray. In medium bowl, mix flour, oats, brown sugar and salt. Add melted butter, stirring until well mixed. Press two-thirds of the mixture in bottom of pan. Bake 12 to 14 minutes or until set.
2Meanwhile, cook apples in microwave as directed on package. In medium bowl, mix apples, pecans and cinnamon; spoon over partially baked crust. Sprinkle with remaining oat mixture.
3Bake 40 to 45 minutes or until lightly browned. Cool in pan on cooling rack 2 hours. Use foil to lift from pan. Cut into 6 rows by 4 rows.