Marble Jell-o Squares

Ingredients:

1 (6 ounce) box red Jell-O gelatin (strawberry)
1 (6 ounce) box blue Jell-O gelatin (I used blueberry)
4 cups boiling water
2 envelopes unflavored Knox gelatin
1/2 cup cold water
1 1/2 cups boiling water
1 (14 ounce) can sweetened condensed milk
Directions:

1. In two separate rectangular pans (9x13-inch is fine), sprinkle each box of Jell-O gelatin. Add 2 cups of boiling water to each pan. Stir until the gelatin dissolves. Put in refrigerator for at least 3 hours, until the liquid turns into jiggly Jell-O.

2. Cut each flavor into small blocks. Carefully mix the blocks in a 9x13-inch pan.

3. In a different bowl, sprinkle 2 pouches of unflavored gelatin into 1/2 cup of cold water. When the gelatin blooms, add 1 1/2 cups boiling water. Whisk it together until it dissolves. Add the can of sweetened condensed milk. Stir and cool.

4. Pour the milk mixture over the Jell-O blocks and stick it in the refrigerator for at least 3 hours (or overnight).

5. Cut into squares or rectangles, and Bon Appetit.

Source: Gotthenibbles.blogspot.com (Adapted from The Food Librarian)