Green Bean Casserole Tart

This is the green bean casserole your Thanksgiving table actually remembers, rebuilt so it eats like something new: the same creamy beans and crispy onions everyone expects, set in a shattering phyllo crust instead of a baking dish, exactly as the photograph shows. The beans stay bright and snappy, the mushroom sauce is made from scratch in ten minutes, and the tart slices cleanly into eight squares.

The phyllo is the part people overthink, and it is the easiest part of the recipe. Eight sheets, brushed with melted butter and layered in a rectangular pan, bake into a golden, flaky shell that holds its shape under the filling — no soggy bottom, no special tart pan, no blind baking. Torn edges are a feature, not a flaw: they crisp into the ragged golden border in the photograph.

It sits happily in our Snacks & Sides collection next to our sweet potato casserole with pecans, the other Thanksgiving side that disappears first, and our oven-roasted chestnuts for the snack table while dinner finishes. Make the shallots and sauce ahead, assemble in the morning, and bake while the turkey rests — the crust stays crisp for a good half hour out of the oven.

The beans must stay bright, or the tart turns grey

Blanching is not optional here. Two minutes in fiercely boiling salted water, then straight into iced water, sets the beans' colour and leaves them with a proper snap, so they survive the oven without going olive-drab and limp. Skip the ice bath and residual heat keeps cooking them; skip the blanch and they steam into something grey and tired. Taste one after blanching — it should be tender-crisp, not raw and not soft, because the oven will finish it.

The sauce is a five-minute roux, not a can

Canned soup is why so many green bean casseroles taste flat and salty, and this sauce takes barely longer. Mushrooms browned properly first, then flour stirred in and cooked for a minute to lose its raw taste, then milk and cream whisked in until it thickens enough to coat a spoon. It should look like a loose gravy, not a paste — it tightens in the oven. Season it boldly; the beans and phyllo are unseasoned and will pull salt from the sauce as it bakes.

Ingredients

• 1 lb fresh green beans (450 g), trimmed
• 8 sheets frozen phyllo dough, thawed
• 1/4 cup unsalted butter (57 g), melted
• 2 tablespoons olive oil (30 ml)
• 8 oz cremini mushrooms (225 g), sliced
• 2 cloves garlic, minced
• 2 tablespoons all-purpose flour (16 g)
• 1 cup whole milk (240 ml)
• 1/2 cup heavy cream (120 ml)
• 1/2 teaspoon fine sea salt (3 g)
• 1/4 teaspoon black pepper (0.5 g)
• 1/4 teaspoon ground nutmeg (0.5 g)
• 1/2 cup grated Parmesan cheese (50 g)
• 2 large shallots (100 g), thinly sliced into rings
• 1/4 cup all-purpose flour (30 g), for dredging
• 1/4 cup neutral oil (60 ml), for frying

Amounts are for the yield below. US customary measures first, grams in brackets for scale users.

Step-by-step instructions

1. Blanch the beans. Bring a large pot of well-salted water to a rolling boil and prepare a bowl of iced water. Add the green beans and boil for 2 minutes, until bright green and tender-crisp. Drain and plunge them straight into the iced water, then drain again and pat dry. Cut the beans into 2-inch lengths and set aside.
2. Crisp the shallots. Toss the shallot rings in the dredging flour and shake off the excess. Heat the neutral oil in a small skillet over medium-high heat until it shimmers, then fry the shallots in two batches for 2 to 3 minutes each, stirring, until deep golden. Lift them out with a slotted spoon onto paper towels and salt lightly while hot. They crisp further as they cool; set them aside for the topping.
3. Make the mushroom sauce. Heat the olive oil in a large skillet over medium-high heat and cook the mushrooms, undisturbed, for 4 to 5 minutes until browned on one side, then stir and cook 2 minutes more. Add the garlic and cook 30 seconds, then sprinkle over the 2 tablespoons of flour and stir for 1 minute. Pour in the milk and cream, whisking constantly, and simmer for 3 to 4 minutes until the sauce thickly coats a spoon. Season with the salt, pepper and nutmeg, stir in the Parmesan, and fold in the blanched beans off the heat.
4. Build the phyllo shell. Heat the oven to 375°F (191°C). Brush a 9 by 13-inch baking pan lightly with melted butter. Lay in one sheet of phyllo, letting the edges overhang, and brush it with butter; repeat with the remaining 7 sheets, turning each one slightly so the overhang fans around the pan. Fold the overhanging edges inward over the rim and brush the folded border with butter, so the crust bakes into the ragged golden edge in the photograph.
5. Fill and bake. Spoon the bean and mushroom mixture into the shell and spread it level, keeping the filling inside the folded border. Bake at 375°F (191°C) for 25 to 30 minutes, until the phyllo is deep golden and crisp and the filling bubbles at the edges. If the border browns too fast, tent it loosely with foil for the last 10 minutes.
6. Top and serve. Rest the tart for 10 minutes so the filling sets enough to slice cleanly. Scatter the crispy shallots generously over the top, just as in the photograph, and cut into 8 squares with a sharp serrated knife, sawing gently through the phyllo rather than pressing down. Serve warm, not piping hot — the flavours settle and the crust stays crisp.

Nutrition estimate

Nutrition figures are estimates calculated from standard ingredient data for the yield stated. Your actual values will vary with brands, substitutions and portion sizes — treat them as a guide, not a guarantee.

Storage & reheating

The tart is at its best the day it is baked, while the phyllo is still crisp. Leftovers keep in a covered container in the refrigerator for up to 3 days; reheat single squares in a 350°F (177°C) oven for 10 to 12 minutes, which re-crisps the crust; the microwave turns phyllo leathery, so avoid it. For make-ahead, the beans, sauce and shallots can each be made a day ahead and refrigerated separately — assemble and bake on the day, adding 5 minutes if the filling goes in cold. The unbaked assembled tart also freezes well for up to 1 month; bake it straight from frozen at 375°F (191°C) for 40 to 45 minutes. Nutrition figures are estimates per serving and vary with the butter and cheese used; estimates vary.

Green Bean Casserole Tart

Recipe by Ahsan ul Haq, FryDaily editor · Published 2 November 2026

Crisp phyllo, creamy beans, golden shallots

Yield: 8 servings  ·  Scale: 1x2x3x

Prep25 minutes

Cook35 minutes

Total60 minutes

Servings8 servings

Calories290 kcal

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Ingredients

• 1 lb fresh green beans (450 g), trimmed
• 8 sheets frozen phyllo dough, thawed
• 1/4 cup unsalted butter (57 g), melted
• 2 tablespoons olive oil (30 ml)
• 8 oz cremini mushrooms (225 g), sliced
• 2 cloves garlic, minced
• 2 tablespoons all-purpose flour (16 g)
• 1 cup whole milk (240 ml)
• 1/2 cup heavy cream (120 ml)
• 1/2 teaspoon fine sea salt (3 g)
• 1/4 teaspoon black pepper (0.5 g)
• 1/4 teaspoon ground nutmeg (0.5 g)
• 1/2 cup grated Parmesan cheese (50 g)
• 2 large shallots (100 g), thinly sliced into rings
• 1/4 cup all-purpose flour (30 g), for dredging
• 1/4 cup neutral oil (60 ml), for frying

Tick ingredients off as you prep, and tap a step below to mark it done as you cook. Scaling adjusts the listed amounts - seasoning to taste stays your call.

Instructions

1. Blanch the beans. Bring a large pot of well-salted water to a rolling boil and prepare a bowl of iced water. Add the green beans and boil for 2 minutes, until bright green and tender-crisp. Drain and plunge them straight into the iced water, then drain again and pat dry. Cut the beans into 2-inch lengths and set aside.
2. Crisp the shallots. Toss the shallot rings in the dredging flour and shake off the excess. Heat the neutral oil in a small skillet over medium-high heat until it shimmers, then fry the shallots in two batches for 2 to 3 minutes each, stirring, until deep golden. Lift them out with a slotted spoon onto paper towels and salt lightly while hot. They crisp further as they cool; set them aside for the topping.
3. Make the mushroom sauce. Heat the olive oil in a large skillet over medium-high heat and cook the mushrooms, undisturbed, for 4 to 5 minutes until browned on one side, then stir and cook 2 minutes more. Add the garlic and cook 30 seconds, then sprinkle over the 2 tablespoons of flour and stir for 1 minute. Pour in the milk and cream, whisking constantly, and simmer for 3 to 4 minutes until the sauce thickly coats a spoon. Season with the salt, pepper and nutmeg, stir in the Parmesan, and fold in the blanched beans off the heat.
4. Build the phyllo shell. Heat the oven to 375°F (191°C). Brush a 9 by 13-inch baking pan lightly with melted butter. Lay in one sheet of phyllo, letting the edges overhang, and brush it with butter; repeat with the remaining 7 sheets, turning each one slightly so the overhang fans around the pan. Fold the overhanging edges inward over the rim and brush the folded border with butter, so the crust bakes into the ragged golden edge in the photograph.
5. Fill and bake. Spoon the bean and mushroom mixture into the shell and spread it level, keeping the filling inside the folded border. Bake at 375°F (191°C) for 25 to 30 minutes, until the phyllo is deep golden and crisp and the filling bubbles at the edges. If the border browns too fast, tent it loosely with foil for the last 10 minutes.
6. Top and serve. Rest the tart for 10 minutes so the filling sets enough to slice cleanly. Scatter the crispy shallots generously over the top, just as in the photograph, and cut into 8 squares with a sharp serrated knife, sawing gently through the phyllo rather than pressing down. Serve warm, not piping hot — the flavours settle and the crust stays crisp.

Calories: 290 kcalProtein: 9 gCarbohydrates: 26 gFat: 18 gSaturated fat: 8 gSodium: 420 mgFiber: 4 gSugar: 5 g

Recipe by Ahsan ul Haq · FryDaily. Printing? This card is designed to print cleanly on its own.

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