Garlic Parmesan Green Bean Casserole Cups

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Golden, flaky puff pastry, creamy garlic-Parmesan sauce, tender green beans, and a shower of crispy fried onions… these little casserole cups are everything I love about the classic holiday side, baked into a fun handheld bite. I love serving them when I want the cozy nostalgia of green bean casserole without committing to a huge pan.

They’re perfect for Thanksgiving, Christmas, potlucks, or any time you want an easy, make-ahead friendly side that still looks impressive on the table. Guests get their own little cup (no messy scooping), and you get a recipe that feels special but doesn’t require any fancy techniques.

Why You’ll Love This Garlic Parmesan Green Bean Casserole Cups

I reach for these Garlic Parmesan Green Bean Casserole Cups whenever I need something that’s both playful and comforting. The puff pastry bakes up buttery and crisp, so you get a flaky crust in every bite instead of just on the edges. Inside, the filling is rich and creamy with garlic, Parmesan, and tender green beans, plus the crunchy topping everyone always fights over.

They’re also naturally portioned, which makes them amazing for buffets or holiday spreads. You can bake them ahead, warm them right before serving, and they hold together beautifully on a plate next to turkey, ham, or roast chicken. And if you’re already a fan of cozy sides like my Trisha Yearwood’s spinach casserole, these cups will slide right into your rotation.

What Kind of Puff Pastry Works Best for Garlic Parmesan Green Bean Casserole Cups?

I’ve tested these cups with both name-brand and store-brand puff pastry, and honestly, both work as long as you let the pastry thaw properly in the fridge. You want a sheet that’s still cold but pliable, so it can be cut into neat squares and pressed into the muffin pan without tearing.

Avoid using crescent roll dough or pie crust for this specific recipe—puff pastry gives you those gorgeous, flaky layers that stay crisp under the creamy filling. If you love buttery, crisp edges the way I do in my crispy garlic butter Parmesan smashed potatoes, puff pastry is the way to go.

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Ingredients for the Garlic Parmesan Green Bean Casserole Cups

Before we jump into cooking, I like to pull everything out and set it on the counter. It makes the whole process feel calmer and faster, especially when I’m juggling other sides.

• Puff pastry sheet – Forms the flaky, buttery base and sides of the cups so each one feels like its own mini pie.
• Fresh green beans – Add color, texture, and a fresh bite that balances the richness of the sauce.
• Butter – Helps sauté the aromatics and adds classic, cozy flavor to the filling.
• Olive oil – Keeps the butter from burning and adds a little extra richness.
• Onion – Gives the filling sweetness and depth so it doesn’t taste flat.
• Garlic – The star of the show; it infuses the sauce with savory flavor in every bite.
• Condensed cream of mushroom soup – Creates that nostalgic, creamy casserole base with very little effort.
• Milk – Loosens the condensed soup and gives the filling a silky texture.
• Sour cream – Adds tang and richness that keeps the sauce from feeling too heavy.
• Parmesan cheese – Melts into the sauce for salty, nutty flavor and helps thicken the filling.
• Crispy fried onions – Bring all the crunch and salty goodness you expect from classic green bean casserole.
• Kosher salt – Brightens the flavors and seasons the beans and sauce.
• Black pepper – Adds gentle warmth and a little bite.
• Smoked paprika – Gives a subtle smokiness and hint of color to the creamy filling.
• Fresh parsley – Adds freshness and a pop of green on top right before serving.

How To Make the Garlic Parmesan Green Bean Casserole Cups

Once everything is chopped and measured, these cups come together quickly. I like to prep the filling while the puff pastry is thawing so the whole recipe flows smoothly.

Step 1: Prep the Pan and Puff Pastry

Grease a standard 12-cup muffin pan with nonstick spray or a light coating of butter. Unfold the thawed puff pastry sheet on a lightly floured surface, then use a knife or pizza cutter to cut it into 12 even squares. Gently press each square into a muffin cup, letting the corners stick up slightly for those pretty, crispy edges. Use a fork to prick the bottom of each pastry to help prevent puffing.

Step 2: Blanch the Green Beans

Bring a pot of salted water to a boil. Add the chopped green beans and cook for 3–4 minutes, just until they turn bright green and slightly tender. Immediately drain them and rinse under cold water (or plunge into an ice bath) to stop the cooking. This keeps the beans vibrant and crisp-tender inside the cups.

Step 3: Build the Creamy Garlic Parmesan Sauce

In a large skillet, melt the butter with the olive oil over medium heat. Add the onion and sauté for 3–4 minutes, until it softens and turns translucent. Stir in the minced garlic and cook for about 30 seconds, just until fragrant.

Whisk in the condensed cream of mushroom soup, followed by the milk and sour cream. Stir until the mixture is smooth and bubbling gently. Season with kosher salt, black pepper, and smoked paprika. Fold in the blanched green beans, most of the Parmesan cheese, and about half of the crispy fried onions. The mixture should be thick, creamy, and well-coated.

Step 4: Fill the Cups

Spoon the creamy green bean mixture into each puff pastry-lined muffin cup, dividing it evenly so every cup is nicely full but not overflowing. Sprinkle the remaining Parmesan cheese over the tops for a cheesy, golden crust.

Step 5: Bake Until Golden and Bubbling

Bake the cups in a 400°F (200°C) oven for 18–20 minutes, or until the puff pastry is deep golden and the filling is hot and bubbling around the edges. Remove the pan from the oven and carefully top each cup with the remaining crispy fried onions.

Return the pan to the oven for another 2–3 minutes to lightly toast the onions. Keep a close eye on them so they don’t burn—once they’re golden and fragrant, they’re ready.

Step 6: Garnish and Serve

Let the cups cool in the pan for about 5 minutes so the filling can set slightly. Run a small offset spatula or butter knife around the edges to loosen each one, then lift them out and transfer to a serving platter. Sprinkle with chopped fresh parsley and serve warm.

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Serving and Storing Garlic Parmesan Green Bean Casserole Cups

This recipe makes 12 cups, which comfortably serves about 6 people as a side (two cups each), or up to 12 people if you’re setting them out as part of a larger holiday spread. I love pairing them with a traditional turkey dinner, a cozy roast chicken, or even a glazed ham—anything that feels like Sunday supper or a special occasion.

If you’re building a big holiday table, these cups sit beautifully alongside classics like irresistible stuffing and mashed potatoes. Because they’re individually portioned, they also travel really well for potlucks and family gatherings.

To store leftovers, let the cups cool completely, then tuck them into an airtight container. They’ll keep in the fridge for up to 3 days. Reheat in a 350°F (175°C) oven or air fryer for 8–10 minutes, just until warmed through and crisp on the edges again. The pastry will soften a bit after the first day, but the flavor is still amazing.

What to Serve With Garlic Parmesan Green Bean Casserole Cups?

When I plan a menu around these little cups, I like to think in terms of textures and flavors that complement the creamy filling and crisp pastry.

1. Roasted or grilled meats – Turkey, roast chicken, pork tenderloin, or prime rib all love a creamy vegetable side like this. These cups are especially good next to simple roasted meats, since they bring so much flavor on their own.
2. Comforting potato sides – Think buttery mashed potatoes or my favorite crispy garlic butter Parmesan smashed potatoes for an extra hit of garlic and crunch.
3. More veggie-forward casseroles – If you’re feeding a crowd that loves vegetables, pair these with something like my garlic butter sautéed green beans and mushrooms or another cheesy bake so everyone has options.
4. Cozy soups and salads – A big green salad or a bowl of soup, such as creamy chicken or a hearty vegetable soup, balances out the richness. I love using these cups as a fun side with soup-and-salad nights when I want dinner to feel a little more special.

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Frequently Asked Questions

Can I use frozen green beans instead of fresh?
Yes, frozen green beans work really well here. I recommend using cut green beans (not French-style) for the best texture. Thaw them first, then blot away excess moisture with a clean towel before adding them to the sauce. You can skip the blanching step, since they’re already partially cooked.

Do I have to use cream of mushroom soup?
Cream of mushroom gives that classic green bean casserole flavor, but you can absolutely swap in cream of chicken or cream of celery if that’s what you have. If you’d rather skip condensed soup altogether, you can make a quick homemade white sauce with butter, flour, milk, sautéed mushrooms, and a pinch of bouillon.

Can I assemble Garlic Parmesan Green Bean Casserole Cups ahead of time?
Yes, and this is one of my favorite things about this recipe. You can make the filling up to 2 days in advance and store it in the fridge. When you’re ready to bake, press the puff pastry into the muffin pan, fill the cups with chilled filling, and bake as directed (adding 2–3 extra minutes if needed). I don’t recommend assembling the unbaked cups too far ahead, because the pastry can get soggy.

How do I keep the puff pastry from getting soggy on the bottom?
Make sure your green beans are well drained and patted dry after blanching, and don’t skimp on pricking the pastry with a fork before filling. Baking on the lower-middle rack of your oven also helps the bottoms crisp up nicely. If you’re reheating leftovers, use the oven or air fryer instead of the microwave to bring the texture back.

Can I make these Garlic Parmesan Green Bean Casserole Cups vegetarian?
Most puff pastry brands are already vegetarian, but always double-check the label. To keep the filling vegetarian, choose a condensed soup that doesn’t contain chicken stock, or make a simple homemade mushroom sauce. Serve them alongside other veggie-forward dishes like my Trisha Yearwood’s spinach casserole for a full vegetarian holiday plate.

Save This Pin For Later

📌 Save these Garlic Parmesan Green Bean Casserole Cups to your Pinterest holiday or side-dish board so you can come back to them any time.

And let me know in the comments how yours turned out. Did you tweak the cheese, add extra garlic, or use frozen green beans? Did you sneak in mushrooms or a different herb on top?

I love hearing how you make these recipes your own. Questions are always welcome too—let’s help each other cook smarter and make holiday hosting feel a little less stressful.

Conclusion

These Garlic Parmesan Green Bean Casserole Cups pack everything you love about classic green bean casserole into neat, flaky, individually portioned bites. They’re easy enough for a weeknight but pretty enough for your biggest celebrations, and they play so well with other comforting dishes like irresistible stuffing or garlic butter sautéed green beans and mushrooms.

If you try them, I’d love to see your version—snap a photo and tag me, or save them to Pinterest so you can come back to the recipe next time you’re planning a big meal. For even more cozy dinner ideas, casseroles, and holiday sides, you can follow along over on Life With Rosa.

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