Most people finish a kitchen remodel and let the leftover cabinets rot in the garage. One homeowner did the opposite. He took three extra base cabinets, one IKEA Kallax bookshelf, and a slab of butcher block, and turned his blank pantry into something that looks like a custom cabinet shop built it.
The kicker? He did it himself, and the trick that makes the shelves look truly built-in is one small router pass most people would never think of.
The starting point wasn’t much
The pantry started as a plain walk-in with builder-grade wire shelves and a bare side wall. He had already dropped the three base cabinets in place, but the rest was raw drywall, exposed floor framing, and no finished counter yet. It looked like a construction zone.
The Kallax move that changed everything
Instead of buying a fourth base cabinet, he grabbed an IKEA Kallax bookshelf, laid it on its side, and painted it to match the cabinet color. That gave him a full row of open cubbies for jars, baskets, and bulk pantry items at a fraction of the cost.
He also added LED strip lights inside the cubbies. That one detail is what makes the Kallax stop looking like an IKEA bookshelf and start looking like a designer piece.
The butcher block shelves he built from scratch
For the upper shelves, he skipped the store-bought floating shelf kits and built his own from butcher block. He glued up the boards in his garage and let them cure flat before cutting to length.
Here’s the part almost nobody does: he used a router to carve a channel into the back of each shelf that matched a wood cleat mounted on the wall. The shelf slides onto the cleat and sits flush, with zero visible brackets and zero gap. From the front, they look like they’re floating.
He explained the method in the comments. He ripped a strip off a 1-by-10 board, glued it to the wall with construction adhesive, screwed it into the studs every 16 inches, then routed out the back of each shelf to lock right onto it.
Layout, then patience
Before mounting anything, he taped out the shelf lines to check spacing. That step alone saves people from a lot of wonky pantry shelves.
Once the layout felt right, he swapped the tape for the real cleats and dry-fit everything before committing.
Then he screwed the cleats into the studs, ready for the shelves.
The finishing touch nobody expected
Most DIY pantries would stop here and call it done. He didn’t. He had Home Depot come in and install real quartz on the counters and up the back wall as a full slab backsplash.
That single move is what pushes this pantry from “nice DIY” into “wait, this looks like a $20K kitchen.” The quartz reflects the LEDs, the butcher block warms it up, and the space suddenly reads like a boutique bakery pantry instead of a converted closet.
What this cost him vs. what it looks like
Three cabinets he already owned. One Kallax (around $80). Butcher block scraps and a 1-by-10 for cleats. LED strip lights. And the quartz install at the end.
A custom pantry from a cabinet company with lit floating shelves and a quartz backsplash would run $15,000 to $25,000 in most markets. He got the same look for a fraction of that, and the only specialty skill was knowing how to use a router.
The Reddit comments called it “pro level craftsmanship.” That’s the reaction of people who have priced this kind of build.
The one takeaway worth stealing
If you have leftover cabinets from any remodel, don’t sell them. The Kallax-plus-butcher-block combo works in a laundry room, mudroom, or home office just as well as it works in a pantry. And the hidden cleat trick with the routed shelf back is the one detail that separates DIY shelves from ones that look designer-installed.
Have you ever repurposed leftover cabinets from a remodel into something bigger?
