The 1972 print ad for the Jell-O No-Bake Cheesecake with Pudding says this ... sugar and one ingredient you might not expect: ...
Instant pudding will help your boxed cake stay super moist and almost jiggly when you add it in with the rest of your cake ...
Use vanilla for a plain cheesecake and top it with fresh fruit before you serve it. Or purchase Jell-O Chocolate Instant Pudding & Pie Filling Mix, garnishing it with shavings of chocolate ...