Hi Heidi, if the cinnamon buns deflated, it means they could have used just a few more minutes in the oven to help the structure set. When you touch the top of the buns lightly, it should feel firm to the touch, but the color should still be quite light. Your buns might need a few additional minutes if you're baking in a glass or ceramic pan, or if your oven is running low. The other possible reason they deflated is because they were over-proofed (left to rise for too long). We hope you try it again, cutting back on the rise time slightly and pre-baking the buns for about 20 minutes next time. We hope that helps! Kye@KAF

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