Pineapple Swirl Trifle

1 jellyroll (homemade or store bought)
1/2 cup cold milk
1 envelope unflavored gelatine
2 (3 1/4 ounce) boxes instant vanilla pudding
3 cups cold milk
1 teaspoon vanilla extract
1 large can drained pineapple slices
2 envelopes Dream Whip or Cool Whip

Cut jellyroll in 12 slices; set aside.

Sprinkle gelatine into 1/2 cup milk; set aside.

Prepare pudding with milk; add softened gelatine and stir until dissolved. Stir in vanilla extract.

Line sides of springform pan with 4 pineapple slices alternating with 4 jellyroll slices. Fold Dream Whip or Cool Whip into pudding. Spoon one-third of the pudding into pan. Arrange a layer of jellyroll slices over pudding. Repeat layers, ending with pudding. Top with pineapple slices. Chill 5 hours.

Cut into wedges to serve.