This Classic Green Bean Casserole Is Exactly How You Remember It — Only Better

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Green Bean Casserole Recipe

Learn really to make nan classical Thanksgiving broadside pinch caller aliases canned greenish beans, a homemade mushroom pick sauce, and store-bought crispy onions.

Serves6 to 8

Prep10 minutes to 20 minutes

Cook45 minutes to 55 minutes

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Close up position of nan area of nan casserole pinch a scoop missing.

Credit: Photo: Vicky Wasik ; Food Stylist: Rachel Perlmutter

Classic Thanksgiving recipes tug astatine specified a tender spot successful our memories. It isn’t until nan crockery is connected nan array that we extremity up wishing it was conscionable better. Green legume casserole is simply a premier illustration of a classical crockery that tin beryllium improved upon, while honoring nan nostalgic clasp it has connected us. 

Green legume casserole is composed of 3 abstracted elements: nan greenish beans, nan mushroom pick sauce, and nan crispy bulb topping. The determination is yours erstwhile it comes to canned aliases caller greenish beans — it’s really a matter of convenience and textural preference. Homemade mushroom pick sauce and those store-bought crispy onions are a must here, truthful I won’t effort to person you otherwise. Here’s really to put it each together to make nan champion classical greenish legume casserole.

What Ingredients Are successful Green Bean Casserole?

  • Green beans: Blanch caller greenish beans for a crisp-tender greenish legume texture aliases opt for 3 (about 15-ounce) cans of greenish beans for a softer bite. 
  • Mushrooms: Browning sliced achromatic fastener mushrooms successful food gives nan creamy condiment its umami flavor. Substitute pinch baby portobello (cremini) mushrooms for an moreover deeper flavor.
  • Butter: Use unsalted food for browning nan mushrooms and garlic, and to toast nan flour for thickening nan sauce.
  • All-purpose flour: Cook nan flour successful food arsenic security against a lumpy gravy. Wait until it turns aureate and smells toasty earlier adding nan liquids.
  • Chicken aliases rootlike broth: Low-sodium broth is champion for controlling nan seasoning level (especially if you’re utilizing canned greenish beans). It’s easy to support nan crockery vegetarian by utilizing low-sodium rootlike broth. 
  • Milk: With truthful galore rich | dishes connected nan table, there’s nary request for dense pick here. Instead, opt for full aliases 2% beverage to springiness nan mushroom condiment its creamy flavor. 
  • Crispy fried onions: There’s nary substitute for nan classical crunch of store-bought crispy fried onions. One mini (2.8-ounce) instrumentality is capable to screen nan casserole.

Why Is My Green Bean Casserole Soggy?

Your mushroom pick condiment whitethorn beryllium excessively bladed if you person added much broth aliases beverage than called for, if you person not simmered nan condiment agelong enough, aliases if it was not cooked connected nan specified power level. Luckily, this is an easy fix. Place nan skillet pinch nan condiment complete medium-high power and whisk often arsenic it comes to a accelerated boil. Continue whisking until nan substance “coats nan backmost of a spoon.” This intends if you dip a spoon into nan sauce, you should beryllium capable to tie your digit done nan condiment and a cleanable statement should appear. If nan condiment runs together, support cooking until you’re capable to do so.  

How to Make Green Bean Casserole successful Advance

It’s elemental to hole this classical greenish legume casserole successful advance, whether you’re getting fresh for nan week up aliases are successful nan midst of vacation preparations. Assemble nan casserole, but time off disconnected nan crispy bulb topping. Cover and refrigerate nan casserole for up to 1 day. Remove nan casserole from nan refrigerator while nan oven heats. Sprinkle pinch nan crispy onions, past bake, adding an further 15 to 20 minutes to nan original cook time. Make judge to cheque nan onions towards nan extremity of cooking, arsenic you whitethorn request to screen pinch foil to forestall over-browning.

Learn really to make nan classical Thanksgiving broadside pinch caller aliases canned greenish beans, a homemade mushroom pick sauce, and store-bought crispy onions.


  • 1 1/2 pounds

    fresh greenish beans

  • 8 ounces

    white fastener mushrooms

  • 2

    cloves garlic

  • 4 tablespoons

    (1/2 stick) unsalted butter, positive much for nan baking dish

  • 1 1/4 teaspoons

    kosher salt, positive much for blanching and arsenic needed

  • 1/2 teaspoon

    freshly crushed achromatic pepper

  • 1/4 cup

    all-purpose flour

  • 1 cup

    low-sodium chickenhearted aliases rootlike broth

  • 1 1/2 cups

    whole aliases 2% milk, aliases half-and-half

  • 1

    (2.8-ounce) instrumentality fried onions (about 1 1/2 cups), specified arsenic French’s Fried Onions

  1. Bring a ample cookware of salted h2o to a boil complete precocious heat. Meanwhile, hole an crystal bath by filling a ample vessel halfway pinch crystal and water. Arrange a rack successful nan mediate of nan oven and power nan oven to 350°F. Lightly overgarment a 9x13-inch aliases different 3-quart baking crockery pinch unsalted butter.

  2. Trim nan ends and trim 1 1/2 pounds greenish beans successful half. Thinly portion 8 ounces achromatic fastener mushrooms, halving first if nan mushrooms are larger than 1 1/2-inches successful diameter. Mince 2 ail cloves.

  3. Add nan greenish beans to nan boiling h2o and navigator until crisp-tender, astir 4 minutes. Drain and transportation to nan crystal bath to extremity nan cooking. When cool, drain again and fto beryllium successful nan colander while you make nan sauce.

  4. Melt 4 tablespoons unsalted food successful a ample skillet complete medium-high heat. Add nan mushrooms, 1 1/4 teaspoons kosher salt, and 1/2 spoon achromatic pepper. Cook until nan moisture is released and nan mushrooms statesman to brown, 5 to 7 minutes. Add nan ail and navigator until fragrant, astir 1 minute.

  5. Sprinkle 1/4 cup all-purpose flour evenly complete nan mushroom substance and operation to combine. Cook until nan flour is nary longer barren and nan movie connected nan bottommost of nan cookware turns golden, astir 1 minute. Slowly whisk successful 1 cup low-sodium chickenhearted aliases rootlike broth, scraping nan bottommost of nan pan.

  6. Add 1 1/2 cups full aliases 2% milk, aliases half-and-half, and whisk to combine. Bring to a boil. Cook, whisking frequently, until nan condiment thickens, 2 to 3 minutes. Remove nan cookware from nan heat. Taste and play pinch much kosher brackish arsenic needed.

  7. Add nan greenish beans and flip to overgarment successful nan sauce. Transfer nan substance to nan baking dish, and dispersed into an moreover layer. (Alternatively, time off nan substance successful nan skillet if it is ovenproof, dispersed it into an moreover layer, and cook straight successful nan skillet.) Sprinkle evenly pinch 1 (2.8-ounce) instrumentality fried onions. Bake until nan edges are bubbling and nan onions are browned, 15 to 20 minutes.

Recipe Notes

Make ahead: Assemble nan casserole without nan bulb topping, cover, and refrigerate up to 1 time ahead. Let nan casserole beryllium astatine room somesthesia while nan oven heats. Uncover and apical pinch nan fried onions. Bake for 30 to 40 minutes, covering nan apical pinch aluminum foil successful nan last 10 minutes if nan onions brownish excessively quickly.

Substitutions: 3 (about 15-ounce) cans greenish beans tin beryllium substituted for nan caller greenish beans. Drain good earlier adding to nan mushroom sauce.

Storage: Leftovers tin beryllium refrigerated successful an airtight instrumentality for up to 4 days.