Rhubarb Pudding Cake

1 pound fresh rhubarb, cut up (3 cups)
1 cup granulated sugar
1 small box regular vanilla pudding mix
2 cups milk
1 (1-layer size) yellow cake mix
Sifted confectioners' sugar
Few drops red food coloring

Heat oven to 350 degrees F.

Combine rhubarb, granulated sugar and red food coloring; let stand.

Prepare pudding mix according to package directions, using the 2 cups milk. Pour into a 9-inch square baking dish. Top with rhubarb-sugar mixture.

Prepare cake mix according to package directions; spoon evenly over rhubarb. Bake for 50 minutes or until cake is done. Sprinkle with confectioners' sugar.

Serve warm.