Fall shelves at Trader Joe’s just got a whole lot cozier, and this year’s headline act might be the smallest box in the bakery aisle. The Cinnamon Roll Blondie Bar Baking Mix is officially back for the season, and at $3.99 a box, it might be the single best dollar-for-dollar dessert hack Trader Joe’s sells all autumn.
If you’ve never made these before, here’s the pitch: it’s a blondie and a cinnamon roll had a baby, and somehow the baby is even better than both parents. The box comes with three separate packets — a blondie base, a swirl-in cinnamon filling, and a powdered sugar icing you drizzle on top once everything’s baked and cooled. No mixer required, no fancy technique, just a bowl, a whisk, and about 35 minutes total (including cooling time).
Why This $3.99 Box Is Worth the Hype
We’ve said it before about Trader Joe’s seasonal bakery mixes, and we’ll say it again: this is the fall equivalent of a grocery store magic trick. You’re getting the swirled, gooey texture of a cinnamon roll with the dense, chewy bite of a blondie, and the whole thing is finished with an icing drizzle that firms up into a proper bakery-case shine. For under four bucks, you’d be hard-pressed to find a fresher-baked dessert anywhere near this price, homemade or otherwise.
“Fully baked, this absolutely has the best attributes of both a blondie and a cinnamon roll — the components work together really well.”
That’s the consensus from shoppers and reviewers who’ve tried it in past seasons, and it’s exactly why this box tends to disappear off shelves fast. It’s clearly marked as a seasonal item, which is retail-speak for “buy it now or wait until next fall” — Trader Joe’s doesn’t restock these once a run sells through.
How to Make It (And Not Mess It Up)
The order of operations matters here, so don’t freestyle it. Preheat your oven to 325°F first. Mix the softened butter with the cinnamon filling packet in a small bowl and set it aside. In a separate, larger bowl, whisk your eggs, stir in melted butter, then fold in the blondie mix until just combined. Spread that batter evenly into your pan, dollop the cinnamon filling on top, and swirl it in with a knife — don’t overmix, you want visible ribbons of cinnamon, not a uniform brown batter.
Bake for 25 to 30 minutes depending on your pan (darker pans bake faster, and an 8×8 will need the full 30). Let it cool completely before mixing the icing packet with water and drizzling it on — icing a warm blondie is the fastest way to turn a clean drizzle into a melted mess. Slice into squares once the icing sets, and you’re done.
Rounding Out Your Fall Trader Joe’s Haul
This mix pairs perfectly with the rest of what Trader Joe’s just rolled out for the season. If you’re already stocking up, don’t sleep on the new Pumpkin Spice Liège Waffles for a cozy weekend breakfast, or check out our full breakdown of Trader Joe’s September Fall Preview for everything else worth grabbing on this trip. And if baking mixes are your thing, the cult-favorite S’mores Bars are another seasonal box that sells out fast.
Bottom line: at $3.99, this is one of the cheapest ways to make your kitchen smell like fall without turning on your oven for hours. Grab a couple of boxes while they’re in stock — seasonal items like this one have a habit of vanishing well before the leaves finish changing.
Photo credits: Image 1 & 2 via BecomeBetty.com.
