Mix cake mix and other ingredients as listed on the box.
Pour batter into greased jelly roll pan and bake at 350 degrees for 15 minutes, until golden brown.
Chill cake until no longer warm.
In the meantime, whisk both boxes of instant pudding mix with cold milk until well combined.
Whisk in sweetened condensed milk. Fold in thawed whipped topping.
Pour cream mixture into gallon size resealable plastic bag and chill while cake is cooling.
Reserve ten strawberries for garnish; dice remaining berries.
When cake is cool, use 3 inch cookie cutter to cut 20 circles of cake.
Cut ten strips of freezer paper (3in x 12in). Wrap each strip around the cookie cutter and tape to create a mini cake form.
Layer one cake circle inside each paper form. Evenly divide berries among the 10 forms.
Cut a corner off the bag of cream and pipe a generous layer of cream on each shortcake, then top with a second cake circle.
Garnish with more cream and a sliced berry on top.