This icebox cake was inspired by a Boston Cream Pie version I'd seen online. I ... limes and the pudding mix. Whisk to combine. While ... powdered sugar and vanilla until stiff peaks form. Fold ... in an 8x8-inch pan.
Combine flour, baking powder, salt, butter, pudding, egg and milk. Beat ... into a 10-inch pie pan. Form like crust. Drain ... 350°F for 30-35 minutes.
Prepare cake pans and mix ... cake layers. Prepare pudding mix following directions for pudding. ... in sugar and vanilla. Blend enough water into ... top cake layer. Chill.