Chatting About Why I Love This Tart (and You Might Too)
Okay, so there’s this thing that happens every time I make these caramelized onion and goat cheese tarts: half of them disappear before anyone even sits at the table. I’m not pointing fingers, but my partner’s got a suspicious look on their face every time. Actually, the first time I made them, it was one of those barely-spring days where you just want something buttery and warm but can’t really be bothered with a fancy dinner. I think I ended up having two for lunch and, erm, okay… maybe another later as a sort of midnight snack (don’t judge me, they’re that good). These tarts just sort of melt away worries—at least until the last one disappears. Then it gets weirdly competitive.
What Makes These So Addictive (Or, Why I Keep Making Them)
I mostly make these when I’ve got friends coming round and I want everyone to think I spent more time in the kitchen than I did. My family goes a bit mad for them at Christmas, but honestly, they’re perfect any old Sunday night, too. The onions get so sweet after a slow cook (I’ve definitely tried to rush it and regretted, but more on that later), and the creamy goat cheese is just dreamy. Plus, if you’re anything like me and you love sharing food that’s easy but doesn’t look it, you get where I’m coming from. Oh, and once—total disaster—the cat tried to snatch one right off the counter. Guess I can’t blame him.
What You’ll Need (And What You Can Swap)
- 1 sheet all-butter puff pastry (the frozen kind is fine, I sometimes use the store’s own brand and no one notices!)
- 3-4 large yellow onions (I’ve used red onions in a pinch—they’re a bit sweeter and maybe, just maybe, even better?)
- 2 tbsp olive oil (but honestly, I’ve used just a knob of butter when out of oil and it’s lovely)
- 100g soft goat cheese (chevre is a tad tangier, but use what you can find; I’ve even tried feta, which is saltier but workable)
- 1-2 sprigs fresh thyme (dried thyme works, my gran swears by it, but I like the fresh stuff when I remember)
- Salt and pepper, just a few pinches to taste
- 1 egg, beaten (for glazing—sometimes I skip this step, but it does look prettier with the glaze)
Making These Tarts: Not as Fussy as It Sounds
- Defrost the puff pastry. Take it out of the freezer, ideally 30 min before you start—though, let’s be honest, I’ve microwaved it in desperation and it’s survived. Just don’t let it get too soft or you’ll be wrestling with goo.
- Caramelize those onions. Slice your onions as thin as you’ve got patience for (chunky slices are fine if you like a little texture). Warm your oil (or butter, or that last bit of both) in a wide pan on medium-low. Pile in the onions and stir a bit; add a pinch of salt. Keep stirring every so often. They go from stubbornly raw to sweet and golden brown after about 30-40 minutes (sometimes less, but don’t fudge this part—trust me, I’ve tried and got weirdly half-burned, sorta crisped onions instead of gold). If they look a bit dry, add a splash of water; or, hey, a shot of white wine if you’re feeling cheffy.
- Prepare the pastry. Heat your oven to 200°C (about 400°F, or if your oven is like mine—”very hot”). Lay the pastry out on some baking paper, and slice into squares or circles with a sharp knife (I use a mug for circles). If you like things even, measure. I… don’t usually. Use a fork to poke little holes (this is called docking, apparently). Place on a baking tray.
- Top and finish. Spoon cooled caramelized onions onto each piece, leaving a little border (they spread out a bit). Crumble goat cheese over the top—don’t be stingy. Sprinkle with thyme leaves, pepper, and a pinch of salt (unless the cheese is super salty). Brush the edges with a bit of beaten egg for that shiny “look at me” finish.
- Bake it! Pop the tray in the oven for about 18-22 mins. They should come out all puffy and golden with bubbling cheese. This is where I sneak a taste—even if I burn my tongue. Happens every time.
Some Notes From My, Erm, Experiments
- Let the onions go darker than you think—they’re sweeter that way. I used to be scared of burning, but as long as you’re watching, it’s fine.
- Pastry that gets too warm is trickier to handle. If that happens, just stick it in the fridge for a few minutes to firm up again.
- A little drizzle of honey after baking? Sounds weird but is *chef’s kiss* (though, my brother says it’s too much… so, up to you).
Switching It Up (What Works, What… Doesn’t)
- I once tried blue cheese instead of goat cheese, thinking it’d be epic. And… well, it was a lot. Maybe less blue cheese, more onion next time?
- Swapping in ricotta works if you’re not a goat cheese fan, though you might miss some tanginess. Add a pinch of lemon zest—took me ages to figure that out!
- If you want to go fancy, add some roasted cherry tomatoes on top. Looks impressive, tastes fab. Don’t skip the salt, though.
If You Don’t Have the “Right” Equipment…
I keep saying a pastry brush is a must for the egg wash, but honestly? Fingers work. Or the back of a spoon. Rolling pin gone missing? Use a wine bottle. (Been there.)
On Storage—and How Long They Actually Last
Officially, these keep a day or two in an airtight container in the fridge. Reheat in a low oven if you want the pastry to get crisp again. Though honestly, in my house it never lasts more than a day—unless I hide some at the back of the fridge. Not that I’d ever do that. Ahem.
How I Like to Serve These
I love them hot, straight from the oven with some rocket (that’s arugula if you’re not in the UK) and a twist of black pepper. Sometimes, I cut them into smaller bites for parties—good with a glass of chilled white or, let’s be real, whatever’s open. On Christmas morning, my aunt insists we pile them in a basket and pretend they’re posh breakfast pastries. It’s become a tradition, whether I like it or not.
Stuff I Learned the Hard Way (Pro Tips, I Guess)
- I once tried baking these at a lower temp to “save energy”—the pastry just gets soggy. Stick with a hot oven.
- Don’t rush the onions. I know it’s tempting, but they actually need that low, slow time, or you get rubbery, not caramel-y onions.
- If you forget the egg wash, it’s not a disaster—just less golden. But don’t skip the fork-pricking (docking) or the pastry puffs up like a pillow and throws your toppings off.
Wait, You Asked… (FAQ Style!)
- Can I use pre-made caramelized onions?
- Sure, if you can find it. Sometimes in a hurry, that’s my move. But the homemade ones are sweeter. Up to you!
- What about other cheeses?
- Honestly, go wild. I’ve tried brie (melty and lush), hard cheddar (not my fave, a bit greasy), and even a mix of bits left in the fridge. Always edible—sometimes magic.
- Will these freeze well?
- Unbaked, yes! Just assemble and freeze. Bake straight from frozen, maybe add a couple extra minutes. Baked tarts can be frozen but sometimes the pastry gets a bit sad on reheating. Still totally edible though.
- Is puff pastry a must?
- Well, yes and no. Shortcrust works, but it’s a bit heavier. Sourdough? I’ve heard of it, but that’s beyond my pay grade. Puff is just easy.
Oh, before I forget—does anyone else find themselves wandering around the kitchen halfway through making these, eating bits of onion straight from the pan? Yes? No? Maybe it’s just me. Anyway—if you give these a try, let me know how they go. Or, you know, just eat them all and don’t tell a soul. That works too.
Ingredients
- 2 large yellow onions, thinly sliced
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 1 sheet puff pastry, thawed
- 150 grams goat cheese, crumbled
- 1 teaspoon fresh thyme leaves, plus extra for garnish
- 1 teaspoon balsamic vinegar
- Salt and black pepper to taste
- 1 egg, beaten (for egg wash)
Instructions
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1Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
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2In a large skillet over medium heat, melt the butter with the olive oil. Add the sliced onions and cook, stirring occasionally, until deeply caramelized, about 25-30 minutes.
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3Stir in the balsamic vinegar, thyme, salt, and black pepper. Remove pan from heat and let the onion mixture cool slightly.
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4Roll out the puff pastry on a lightly floured surface and cut into 6 equal squares. Transfer to the prepared baking sheet.
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5Spoon the caramelized onions onto the center of each pastry square, leaving a border. Top with crumbled goat cheese and brush the pastry edges with the beaten egg.
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6Bake for 15-18 minutes or until the pastry is golden and crisp. Remove from oven, garnish with extra thyme, and serve warm.
Approximate Information for One Serving
Nutrition Disclaimers
Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.
Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.
To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.
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