I started making this on nights when I wanted something that felt like real food but my brain was completely done. Polenta from a tube isn’t glamorous — I know — but sliced up and roasted in a hot toaster oven, it gets this crispy, almost pan-fried crust that you really wouldn’t expect. Add brown butter, garlic, Parmesan, and a pile of jammy roasted tomatoes and the whole thing becomes something I’d honestly serve to guests without apologizing for it.
The brown butter step sounds like extra work. It’s not. Three minutes in a small pan while you slice the polenta. That’s it. It adds a depth that straight olive oil just doesn’t have here, and the garlic blooms in it without burning, which is a nice bonus. I’ve made this with both a reliable toaster oven and a full-size oven and honestly the toaster oven does it better — the small space holds heat more aggressively and you get a better crust on the polenta edges.
The tomatoes do their thing on the same tray, which is convenient but also just good cooking — their juices concentrate and get a little sticky from the balsamic. You spoon all of it, juices and everything, over the crispy polenta at the end. Basil on top. Done in 35 minutes from fridge to table.
One thing worth knowing: polenta slices vary a lot in moisture depending on the brand. Dryer is better here. Patting them with a paper towel helps no matter what, and if you want to be thorough, a toaster oven baking sheet with a light rack underneath will get you extra airflow and an even crispier bottom. Not required, but if you’re particular about your crust, worth it.
Toaster Oven Crispy Brown Butter Roasted Garlic and Parmesan Polenta Squares with Roasted Cherry Tomatoes
Slices of firm polenta get golden and crispy in the toaster oven, topped with burst cherry tomatoes and a shower of Parmesan. It's a proper little meal and honestly one of my favorite things to make on a weeknight when I want something that feels fancy but isn't.
Ingredients
For the polenta squares
For the roasted tomatoes
To finish
Instructions
Prep
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Preheat your toaster oven to 425°F on the bake or convection bake setting. Line your toaster oven tray with foil or parchment — polenta likes to stick, and you'll thank yourself later.
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Melt the butter in a small saucepan over medium heat. Let it keep going for about 2-3 minutes until it smells nutty and turns golden. Pull it off the heat immediately and stir in the minced garlic. It'll sizzle. That's what you want.
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Slice the polenta tube into rounds roughly ½ inch thick. Pat them dry with a paper towel — this is the move that actually gets them crispy rather than just warm and soft.
Assemble and roast
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Brush both sides of each polenta slice generously with the brown butter garlic mixture. Lay them out in a single layer on one half of your toaster oven tray. Drizzle any remaining butter over the top.
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In a small bowl, toss the halved cherry tomatoes with olive oil, balsamic vinegar, salt, and red pepper flakes if you're using them. Spread them cut-side up on the other half of the tray.
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Roast everything at 425°F for 15 minutes. The polenta should be starting to look golden at the edges.
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Scatter the Parmesan evenly over the polenta slices. Return the tray to the oven and roast another 8-10 minutes until the cheese is melted and has a few brown spots, and the tomatoes have collapsed and are jammy.
Serve
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Transfer the polenta squares to a plate or board. Spoon the roasted tomatoes and all their juices right over the top.
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Scatter on the torn basil and a pinch of flaky sea salt. Serve immediately — they're best hot while the edges are still a little crisp.
Notes
Pre-made polenta tubes (I usually grab the Italian herb flavor or plain) are sold in most grocery stores near the pasta or in the refrigerated section — they make this genuinely weeknight-fast. If yours is on the softer side, pop the slices in the freezer for 10 minutes before roasting. Don't skip patting them dry. Leftovers reheat well back in the toaster oven at 400°F for 6-8 minutes. This is also really good with a fried egg on top if you want to make it more of a full dinner.
Nutrition
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Written by
Emma is a home cook who loves coaxing big flavor out of a toaster oven — from crispy roasted vegetables to easy weeknight dinners and sweet treats. She develops and tests Toastera's recipes for small-appliance kitchens.
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