All-American Flag Dessert

4 cups boiling water, divided
2 pkg. (4-serving size each) JELL-O Brand Berry Blue Flavor Gelatin
2 pkg. (4-serving size each) JELL-O Brand Gelatin, any red flavor
3 cups ice cold water, divided
1 pkg. (4-serving size) JELL-O Brand Lemon Flavor Gelatin
1 tub (8 oz.) cool whip, thawed

STIR 1 ½ cups boiling water into blue and red gelatin in separate bowls at least 2 minutes until completely dissolved. Stir 1-½ cups ice cold water into each bowl.

SPRAY 13x9-inch pan with no stick cooking spray; place on cookie sheet. Pour red gelatin into pan. Refrigerate 45 minutes until set but not firm (should stick to finger when touched). Refrigerate blue gelatin in bowl 45 minutes. MEANWHILE stir remaining 1 cup boiling water into lemon gelatin in bowl at least 2 minutes until dissolved. Refrigerate 25 minutes or until slightly thickened (consistency of unbeaten egg whites), stirring occasionally, Stir in whipped topping with wire whisk, Gently spread over red gelatin in pan, Refrigerate 10 minutes or until set but not firm, Gently spoon thickened blue gelatin over lemon gelatin mixture in pan. REFRIGERATE 6 hours or overnight until firm.Unmold. Decorate with additional whipped topping, strawberries and blueberries to resemble a flag.