Breville BOV900BSS Smart Oven Air Fryer Pro, Brushed Stainless Steel

Why it's worth it

The Smart Oven Air Fryer Pro includes a dedicated proof function among 13 settings, and its five-element system holds a steady low temperature across a large interior. It replaces a toaster oven and a proofer at once.

Most bakers don't want a second appliance. They want the appliance they already own to do this. The Breville is the most convincing version of that argument. Its Element IQ system uses five independent quartz elements with PID temperature control, which Breville says lets it hold roughly 95°F in proof mode across the full 0.9 cubic foot interior — no cold corner, no guessing which shelf runs warmer.

The interior is genuinely large: 16 by 13.5 by 7 inches, enough for two loaf pans side by side or a sheet of rolls. Then you pull the dough out, hit bake, and the same box handles the loaf. If you're upgrading from a bread machine and want control over shaping without adding hardware, that continuity is the whole appeal.

From our review of 7 dough proofing boxes

What we like

• +Most bakers don't want a second appliance
• +The interior is genuinely large: 16 by 13.5 by 7 inches, enough for two loaf pans side by side or a sheet of rolls
• +Owner feedback on longevity is unusually strong for a countertop oven — plenty of people report years of near-daily use before…
• +It's the most versatile appliance in this guide by a wide margin

What to know

• –The proof setting runs around 95°F, which is above the 75 to 78°F window King Arthur recommends for most yeast bread and well…
• –It's big and heavy — over 30 pounds and 21.5 inches wide — and it never folds away
• –A minority of owners report control-board and preheat glitches after a couple of years, where the cycle hangs after preheating