HEAT oven to 350°F. Spray an 13 x 9-inch pan with baking spray with flour.
BEAT shortening, granulated sugar, brown sugar, eggs and vanilla in large bowl with electric on medium speed until blended. Combine flour, baking soda and salt in small bowl. Add gradually to shortening mixture at low speed. Beat until well blended. Stir in chocolate chips. Divide dough in half. Spread half in bottom of prepared pan.
COMBINE caramels and water in small saucepan; heat over low heat. Stir until caramels melt. Spread over dough in pan to within 1⁄2 inch of edge. Spoon remaining dough over caramel mixture. Spread carefully.
BAKE 30 to 35 minutes or until golden brown. Loosen from sides of pan with knife. Remove pan to cooling rack to cool completely. Cut into 24 bars.
Serving Size (1 bar, 1/24 of recipe), Calories 300 (Calories from Fat 130), Total Fat 14g (Saturated Fat 5g, Trans Fat 0g), Cholesterol 20mg, Sodium 200mg, Total Carbohydrate 43g (Dietary Fiber 1g, Sugars 31g), Protein 3g; Percent Daily Value*: Vitamin A 4%, Vitamin C 0%, Calcium 4%, Iron 6%.
*Percent Daily Values are based on a 2,000 calorie diet.