This is the most common problem with candy apples and the answer is too long for here. To address that problem, I wrote an entire post: u003ca href=u0022https://rosebakes.com/prevent-bubbles-on-candy-apples/u0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003eHow to Make Bubble-Free Candy Applesu003c/au003e. Be sure to click through and read that for all the tips on making flawless apples!