I spent last Saturday afternoon baking a batch of sourdough while simultaneously steaming a side of salmon for dinner guests. Ten years ago, that would have meant two ovens running, a countertop cluttered with appliances, and a lot of juggling. Now? A single combi steam oven countertop handled both tasks without breaking a sweat. We tested three of the most talked-about models for a full month — integrating them into our daily cooking routines, tracking durability, ease of cleaning, and overall impact on kitchen workflow. Here’s what we found.
If you’re short on time, the Toshiba 6-IN-1 Compact Steam Oven earned our top recommendation. It balanced performance, size, and smart features better than anything else we tested — and it didn’t cost a fortune.
| Product | Best For | Buy Link |
|---|---|---|
| TOSHIBA 6-IN-1 Compact Steam Oven | Smart Features & Value | Check Price |
| SMEG COF01 Countertop Combi Oven | Style & Versatility | Check Price |
| ROBAM R-Box Pro Countertop Combi Steam Oven | Dual-Zone Precision | Check Price |
How We Tested These Combi Steam Ovens
We integrated these three ovens into our own kitchens for a full month of daily use. That meant baking bread, roasting vegetables, steaming fish, reheating leftovers, and even trying a few ambitious recipes like baking a cake in a toaster oven (yes, it works). We tracked how each model handled moisture retention, evenness of heat, ease of cleaning after greasy roasts, and how much counter space it actually consumed. We also subjected them to real-world stress: multiple cycles in a row, spills, and the occasional forgetful timer. No lab conditions — just honest home cooking.
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TOSHIBA 6-IN-1 Compact Steam Oven (Smart App Control)
Quick take: This is the one we kept reaching for. If you want smart features without the premium price tag, the Toshiba is your best bet.
The first thing we noticed was the weight — this thing feels solid, with a sturdy door hinge that doesn’t wobble when you open it. The stainless steel interior has a brushed finish that resisted smudges better than the glossy interiors on the other models. The 20L capacity is surprisingly generous for a countertop unit; we fit a full sheet pan of roasted vegetables and a small chicken without crowding. The double-layer rack setup lets you cook two dishes at once, which is rare at this size.
Over a month of heavy use, the 1400W steam mode became our go-to for reheating leftovers. It takes about 2 minutes to reach 212°F, and the steam wraps around food evenly — no more soggy edges or cold centers. The TSmartLife app let us monitor cooking from the couch, which felt gimmicky at first but actually saved us from burning a batch of dinner rolls. One honest annoyance: the water tank is small, requiring a refill for longer steam sessions. Not a dealbreaker, but worth noting if you plan on steaming for more than 30 minutes at a time.
Pros:
- Smart app control — Real-time monitoring and remote adjustments via TSmartLife app; actually useful, not just a party trick.
- Fast steam generation — 2 minutes to full steam at 212°F; perfect for quick reheats and delicate fish.
- Compact footprint — 20L capacity fits on most countertops without dominating the space.
Cons:
- Small water tank — Requires refilling for steam sessions longer than 30 minutes; could be bigger.
- App setup friction — Initial Wi-Fi pairing took two tries; not as seamless as advertised.
Our Take
Best for: Home cooks who want smart features and solid steam performance without spending a fortune. Think twice if: You regularly steam for over an hour at a time — the small tank will annoy you.
SMEG COF01 Countertop Combi Oven – Multi-Function Grill
The real story: This oven is a showpiece. If your kitchen aesthetic matters as much as your cooking, the SMEG delivers on both fronts — but it’s not the best pure performer.
Out of the box, the SMEG commands attention. The retro design with a brushed stainless steel finish and chunky knobs feels premium in a way that photos don’t capture. At 19.75″ L x 19.5″ W x 15″ H, it’s the largest of the three we tested — it dominated our standard countertop and required some rearranging. The door handle has a satisfying heft, and the knobs click with a precision that makes you want to use them just for the tactile feedback.
We put the 10 cooking functions through their paces over a month. The Pure Steam mode preserved moisture beautifully in broccoli and fish, but the Combi Convection Steam setting struggled with temperature consistency — our roast chicken came out with a slightly uneven crust. The Grill function, however, was a standout: it produced a nice char on burgers and vegetables without excessive smoke. The warming mode came in handy during dinner parties. A real downside: cleaning the interior after greasy cooks required serious elbow grease — the non-stick coating isn’t as effective as advertised.
Pros:
- Beautiful design — The retro aesthetic is unmatched; it’s the only oven that drew compliments from guests.
- 10 versatile functions — Grill, air fry, steam, defrost, warming — covers almost every cooking need.
- Advanced steam options — Pure Steam, Combi Convection Steam, and Combi Grill Steam give you control over moisture levels.
Cons:
- Large footprint — At nearly 20 inches wide, it’s a countertop hog; measure your space before buying.
- Inconsistent convection — The combi steam mode had hot spots; our chicken cooked unevenly.
Final Thoughts
Ideal for: Style-conscious cooks who want a statement piece that also performs basic steam and grill functions. Pass on this if: You need precise, even heat for baking or roasting — the SMEG isn’t consistent enough for serious bakers.
ROBAM R-Box Pro Countertop Combi Steam Oven White
Why it made our list: The R-Box Pro is the serious cook’s choice. If you want professional-level control over temperature and steam, this is the one to beat.
The R-Box Pro looks understated — a clean white shell with a minimalist display — but the build quality is immediately apparent. The door closes with a muffled thud, and the interior cavity feels spacious despite the compact exterior. The dual-zone independent heat control is the standout feature: you can adjust the top and bottom heating elements independently by up to ±36°F. During a week of baking sourdough, this gave us the ability to create a crisp bottom crust while keeping the top from burning — something neither the Toshiba nor the SMEG could match.
The Steam-Fry technology combines precision steam injection with 1800W vortex air circulation. We tested it on frozen french fries and chicken wings: the exterior came out shatteringly crisp while the interior stayed juicy. The steam injection adds moisture without making food soggy — a tricky balance that most countertop ovens get wrong. Cleaning was straightforward thanks to the smooth ceramic interior, though the water tank is on the smaller side, similar to the Toshiba. One minor gripe: the interface is menu-driven and takes a few days to learn; the manual is dense.
Pros:
- Dual-zone temperature control — Independent top and bottom heating with ±36°F adjustment; perfect for baking and roasting.
- Steam-Fry technology — 1800W vortex air circulation combined with steam injection produces exceptionally crispy results.
- All-in-one functionality — Replaces steamers, ovens, and air fryers with one compact unit; saves counter space.
Cons:
- Steep learning curve — The menu system and dual-zone controls require reading the manual; not intuitive out of the box.
- Small water tank — Like the Toshiba, it needs refilling for longer steam sessions; could be larger.
The Real Deal
Great match for: Enthusiast home cooks who want precise control over temperature and steam for baking and roasting. Not great if: You prefer a simple, set-it-and-forget-it experience — the R-Box Pro demands attention and learning.
How to Choose a Combi Steam Oven Countertop
Picking the right combi steam oven countertop comes down to three things: size, steam performance, and how much control you want. Here’s what we learned after a month of testing.
Size and Counter Space
The SMEG is a beast at nearly 20 inches wide. The Toshiba and ROBAM are more compact, but even they need dedicated space. Measure your countertop before buying — and account for the door swing. We found that a minimum of 18 inches of clear counter depth is necessary for comfortable use.
Steam Quality and Tank Capacity
All three models produced good steam, but the Toshiba’s 2-minute heat-up time was the fastest. The ROBAM’s steam injection is more controlled, ideal for delicate baking. Tank size matters: if you steam often, look for a larger tank or one that’s easy to refill mid-cycle. Both the Toshiba and ROBAM need refilling for sessions over 30 minutes.
Cooking Versatility
A good countertop combi oven should replace several appliances. The SMEG offers 10 functions, the Toshiba has 6, and the ROBAM focuses on precision steam and air frying. Think about what you cook most. If you bake sourdough or roast whole chickens, the ROBAM’s dual-zone control is worth the learning curve. For everyday reheating and steaming, the Toshiba is simpler and faster.
Ease of Cleaning
The ROBAM’s ceramic interior wiped clean easiest. The Toshiba’s brushed stainless was close behind. The SMEG required more scrubbing after greasy cooks — the non-stick coating didn’t live up to its promise. If you hate cleaning, avoid the SMEG for heavy roasting.
The best combi oven for most people is the Toshiba — it balances performance, size, and smart features at a price that doesn’t hurt. The ROBAM is for serious cooks who want precision. The SMEG is for those who prioritize aesthetics above all else.
Our Final Recommendation
After a month of testing, the Toshiba 6-IN-1 Compact Steam Oven is our overall winner. It’s the best balance of performance, size, and price — and the smart app control is a genuine convenience, not a gimmick. For budget-conscious buyers, the Toshiba is also the best value. If you want the best countertop steam oven for serious baking and roasting, the ROBAM R-Box Pro is worth the extra investment. The SMEG is a beautiful machine, but its inconsistent convection and large footprint make it a niche choice for style-first kitchens. Whichever you choose, a combi steam oven will change how you cook — just make sure you pick one that fits your counter and your cooking style.
Frequently Asked Questions
What’s the difference between a combi steam oven and a steam toaster oven?
A combi steam oven combines steam injection with convection heat, allowing you to bake, roast, steam, and air fry in one unit. A steam toaster oven typically only adds steam to a traditional toaster oven’s functions, with less precise temperature control. Combi steam ovens are more versatile and better for baking, while steam toaster ovens are simpler and often cheaper.
Can I use a combi steam oven countertop for baking sourdough bread?
Yes, absolutely. We baked sourdough in all three models. The ROBAM’s dual-zone control gave us the best crust, but the Toshiba also produced excellent results with its fast steam generation. For more tips, check out our guide on making sourdough bread without a Dutch oven — the same principles apply.
How do I clean a combi steam oven countertop?
Most models have a self-cleaning steam cycle that loosens food residue. For stubborn stains, use a mild detergent and a soft sponge — avoid abrasive cleaners. The ROBAM’s ceramic interior was the easiest to wipe down. For the SMEG, we recommend cleaning immediately after use to prevent grease buildup.
Is a combi steam oven countertop worth it for a small kitchen?
Yes — if you choose the right size. The Toshiba and ROBAM are compact enough for most countertops and replace multiple appliances (steamer, oven, air fryer). The SMEG is too large for small kitchens. Measure your space and consider how often you’ll use the steam function. For most home cooks, the versatility justifies the counter space.
