Red, White & Blue Layered Gelatin (Jello Dessert)

A pretty, tasty & patriotic
 special occasion dessert.

Ingredients:
3 envelopes knox unflavored gelatin
1/2 cup warm - hot water
2 (3 ounce) boxes of strawberry gelatin
1 box berry blue gelatin ~ 1.55 ounce box (makes 3 cups) or, a 3 ounce box (makes 2 cups)
3 cups milk
1 1/2 cups sugar 
1 1/2 teaspoons vanilla
3 cups sour cream (24 ounces)
strawberries and blueberries for garnish (optional)

Method:
Empty the unflavored gelatin into a small bowl. Stir in the 1/2 cup of water, until all of the gelatin is moistened.
For the first layer, prepare one box of strawberry gelatin and pour into a 9 x 13 glass dish. Let set, in the refrigerator, for 45 minutes.
While the first layer is setting, heat the milk, slowly to a boil, over medium/low heat.  (Be careful to stir, to prevent a skin from forming on top of the milk or on the bottom inside of the saucepan.) Add the sugar, vanilla and unflavored gelatin. Stir continuously and return to a gentle boil.  Set aside to cool at room temperature. When the milk mixture has cooled, stir in the sour cream. Blend well with a whisk or fork. Divide into 3 equal parts. Stir occasionally, to prevent from becoming too thick or set. 
Pour one portion of vanilla gelatin on top of the strawberry layer is set and firm. Chill 45 minutes. Meanwhile, prepare the blue gelatin according to the package directions. Set aside to cool at room temperature.
After the second layer is set, carefully add the blue jello to the pan. Allow to chill for 45 minutes, until set. Add another portion of vanilla gelatin. Chill for 45 minutes.
Prepare the second box of strawberry gelatin according to the package directions. Allow to cool. Carefully add to pan and continue ti chill for another 45 minutes. (As the pan becomes fuller, simply pour the layers on without removing the pan from the refrigerator.)
Add the last portion of vanilla gelatin and  allow to set for 45 minutes. Cut into 15 to 18 portions. If desired, garnish with fresh berries. Enjoy!

Note: This gelatin does take considerable time to assemble, but it is worth the effort. Great flavors and it looks impressive, too!