Prep: 15 min., Bake: 40 min., Stand: 5 min., Cool: 2 hr.
Place pecans in a single layer in a shallow pan.
Bake at 350° for 8 to 10 minutes or until toasted, stirring occasionally.
Coat a 9-inch square pan with cooking spray. Beat shortening and next 4 ingredients at medium speed with an electric mixer until well blended; add flour, and beat at low speed just until combined. Stir in 1 cup chocolate morsels and 1/2 cup pecans. Spread mixture into prepared pan.
Bake at 350° for 25 to 30 minutes or until lightly browned. Remove from oven, and sprinkle with remaining 1 cup chocolate morsels. Let stand 5 minutes or until chocolate is soft and melted. Spread chocolate evenly, and sprinkle with remaining 1/4 cup pecans. Cool in pan on a wire rack 2 hours or until completely cool. Cut into squares.