The 38-year-old actor playfully discussed the holiday tradition on Monday's episode of Jimmy Kimmel Live!. Kutcher and Kunis celebrated a candy-free Easter with their daughter, who turns 18 months old April 1, on Sunday.
"We had a legitimate conversation as to whether or not we're going to go down that path," the star said. "We think we're going Santa Claus, but we don't know about the bunny."
"It's tough!" he explained. "It's like, why is the bunny laying eggs? 'Mommy, does a bunny lay eggs?' 'No, but the Easter bunny does.' 'Then why don't other bunnies lay eggs?' And it becomes a whole thing."
Kutcher and Kunis held an Easter egg hunt for Wyatt, but filled plastic eggs with Cheerios and raisins instead of candy and chocolates. The actor admitted he and Kunis themselves are "crazy" for sugar, including Cinnamon Toast Crunch.
"We didn't want to put candy in it because she's one-and-a-half and we're not ready for her to be ready for candy," he said. "She loved the raisins. She was like going ape for the raisins."
Kutcher and Kunis co-starred on That '70s Show long before they started dating and eventually tied the knot. The actor detailed their secret July wedding on The Ellen DeGeneres Show this month, calling it a "ninja effort."
"We really didn't want helicopters at our wedding and it's a legitimate concern," he said. "I was like, posting things on social media that were in different locations to avoid it. We didn't want to be screaming our vows at each other."
Kutcher will play Colt on forthcoming Netflix series The Ranch, while Kunis will next star in Bad Moms with Kristen Bell.