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Slow Cooker Green Bean Casserole on black plate and fork served
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Slow Cooker Green Bean Casserole

Why wait for the holidays to enjoy homemade green bean casserole? This recipe includes a delicious, made-from-scratch sauce with bacon and shallots over frozen green beans that cook to perfection in the slow cooker.
Course Side Dish
Cuisine American
Prep Time 25 minutes
Cook Time 3 hours
Total Time 3 hours 25 minutes
Servings 12
Calories 251kcal
Author Jennifer Draper

Equipment

  • Skillet
  • large slow cooker or casserole slow cooker

Ingredients

  • 24 oz frozen extra fine green beans
  • 2 slices thick-cut bacon chopped finely
  • 1 medium shallot minced about 1/4 cup
  • 2 cloves minced garlic I used jarred
  • 1/4 cup flour
  • 2 1/2 cups chicken broth
  • 1 cup heavy cream
  • 1/2 teaspoon salt
  • 1/4 teaspoon herb and garlic seasoning
  • 1 cup Parmesan cheese
  • 6 oz French fried onions

Instructions

  • Spray slow cooker with nonstick cooking spray
  • Add frozen green beans to slow cooker
  • In skillet over medium-high heat, sauté bacon until lightly browned (around 3-5 minutes)
  • Add shallots and sauté for another 1-2 minutes until they just start to brown
  • Add minced garlic and cook for 1 more minute
  • Add flour evenly to pan, and stir the sauce to coat bacon, shallots, and garlic
  • Slowly add chicken broth while stirring until smooth
  • Let mixture simmer for about 4-6 minutes until sauce thickens enough to stick to a spoon
  • Add cream and seasonings and let mixture continue to simmer for another 3-4 minutes until it is thick and heated through
  • Pour sauce over green beans in slow cooker and toss lightly to evenly coat them
  • Sprinkle green beans with cheese, cover, and cook on high for 2 ½ to 3 hours or low for 5 to 6 hours
  • About 15 minutes before serving, sprinkle French-fried onions across top of casserole and let it heat on high until lightly crispy

Notes

  • Store leftovers in an airtight container in the fridge for up to 3-4 days. Reheat in a microwave-safe dish, stirring occasionally, or in a preheated oven at 350°F for about 15-20 minutes.
  • Use a standard casserole slow cooker or any 6-quart or larger slow cooker. This recipe will serve about 12 helpings.
  • Double (or halve) this recipe by adjusting the slow cooker size accordingly to prevent the mixture from being spread too thinly or too deep to heat properly.
  • To thicken the sauce a bit more, turn off the slow cooker and let it set for about 15 minutes before serving.
  • To make this recipe in the oven:
    • Prepare the sauce following the directions as written.
    • Preheat the oven to 350°F and allow the frozen green beans to thaw at room temperature.
    • Assemble the casserole as directed in an oven-safe dish and bake for about 30 minutes.
    • Add the French fried onions to the top of the casserole and bake for about 15 more minutes or until bubbly.

Nutrition

Calories: 251kcal | Carbohydrates: 14g | Protein: 7g | Fat: 19g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.01g | Cholesterol: 32mg | Sodium: 412mg | Potassium: 213mg | Fiber: 2g | Sugar: 3g | Vitamin A: 752IU | Vitamin C: 7mg | Calcium: 139mg | Iron: 1mg