Green Bean Casserole with Mushrooms and Bacon

Green Bean Casserole with Mushrooms and Bacon – creamy, savoury, and topped with crisp fried onions for the perfect easy holiday side.

This green bean casserole is a flavourful twist on the classic. Using just one can of soup but boosting everything with sautéed mushrooms, crispy bacon, and a touch of seasoning, it bakes up rich, savoury, and perfectly comforting. The fried onion topping adds that essential crunch, making it an easy crowd-pleaser for any holiday table.

Tips for Best Results

• Drain or pat dry green beans so the sauce doesn’t become watery.
• Brown the mushrooms well – letting them cook off moisture improves flavour.
• Use the bacon fat for frying the mushrooms to boost richness.
• Don’t skip the two-step bake – baking first without the topping keeps the onions from burning.
• Let it rest for a few minutes before serving to help the sauce thicken.

Ingredients & Substitutions

• Bacon – Streaky bacon works best, but smoked bacon adds extra depth.
• Fresh mushrooms – Button or cremini are ideal. You can use tinned mushrooms in a pinch, though they won’t brown the same.
• Cream of mushroom soup – Standard condensed soup. Substitute cream of chicken if you prefer a lighter mushroom flavour.
• Milk – Whole milk gives the best texture, but semi-skimmed works too.
• Soy sauce – Adds savouriness. Worcestershire sauce can be used instead.
• Seasonings – Onion powder and garlic powder replace fresh aromatics for convenience.
• Green beans – Fresh, blanched beans give the best texture, but thawed frozen beans work well.
• French fried onions – Essential for crunch. Crispy shallots or homemade fried onions also work.

Looking for More Holiday Side Dishes?

Check out more of my favourite side dishes for festive meals!

Sweet Potato Casserole with pecan crumble and toasted marshmallows – buttery, creamy, not overly sweet, and perfect for a holiday side dish.

Upgrade Stove Top Stuffing in the Oven with fresh herbs and produce for a delicious, flavourful side dish that’s perfect for the holidays.

Enjoy fall flavours with this tasty roasted brussels sprouts and sweet potatoes recipe. Perfect for a weeknight meal or holiday feast!

Green Bean Casserole with Mushrooms and Bacon

Yields: 6–8 servings | Prep Time: 20 minutes | Cook Time: 40 minutes |

Ingredients

• 6 slices bacon, chopped
• 8 oz (225 g) fresh mushrooms, sliced
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1 can (10 ¾ oz) condensed cream of mushroom soup
• ½ cup whole milk
• 1 teaspoon soy sauce
• ½ teaspoon black pepper
• 4 cups cooked green beans (fresh, blanched or frozen, thawed)
• 1 ½ cups French fried onions, divided

Directions

1. Preheat oven to 350°F (175°C).
2. In a large skillet over medium heat, cook bacon until crisp. Remove with a slotted spoon and set aside, leaving about 1 tablespoon of the bacon fat in the skillet.

1. Add mushrooms and onion to the skillet. Cook until softened and browned, about 6–8 minutes. Stir in garlic and cook for 1 more minute. Remove from heat. (Image 1)
2. In a large bowl, stir together the cream of mushroom soup, milk, soy sauce, and pepper until smooth.
3. Add the green beans, bacon, mushroom mixture, and 1 cup of the fried onions. Stir until evenly combined. (Image 2)

1. Transfer to a 9×13-inch baking dish and spread evenly.
2. Bake uncovered for 25 minutes, until hot and bubbling. (Image 3)
3. Remove from oven and stir gently. Sprinkle remaining ½ cup of fried onions evenly over the top. (Image 4)
4. Return to oven and bake for another 10–15 minutes, until the topping is golden brown.
5. Serve warm.

Continue to Content

Yield: 6-8 Servings

Green Bean Casserole with Mushrooms and Bacon

Prep Time: 20 minutes

Cook Time: 40 minutes

Total Time: 1 hour

Green Bean Casserole with Mushrooms and Bacon – creamy, savoury, and topped with crisp fried onions for the perfect easy holiday side.

Print

Ingredients

• 6 slices bacon, chopped
• 8 oz (225 g) fresh mushrooms, sliced
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1 can (10 ¾ oz) condensed cream of mushroom soup
• ½ cup whole milk
• 1 teaspoon soy sauce
• ½ teaspoon black pepper
• 4 cups cooked green beans (fresh, blanched or frozen, thawed)
• 1 ½ cups French fried onions, divided

Instructions

1. Preheat oven to 350°F (175°C).
2. In a large skillet over medium heat, cook bacon until crisp. Remove with a slotted spoon and set aside, leaving about 1 tablespoon of the bacon fat in the skillet.
3. Add mushrooms and onion to the skillet. Cook until softened and browned, about 6–8 minutes. Stir in garlic and cook for 1 more minute. Remove from heat.
4. In a large bowl, stir together the cream of mushroom soup, milk, soy sauce, and pepper until smooth.
5. Add the green beans, bacon, mushroom mixture, and 1 cup of the fried onions. Stir until evenly combined.
6. Transfer to a 9×13-inch baking dish and spread evenly.
7. Bake uncovered for 25 minutes, until hot and bubbling.
8. Remove from oven and stir gently. Sprinkle remaining ½ cup of fried onions evenly over the top.
9. Return to oven and bake for another 10–15 minutes, until the topping is golden brown.
10. Serve warm.

Recommended Products

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• 
  Kyraton Serving Spoons
• 
  Pyrex Glass Mixing Bowl Set
• 
  Casserole Dish

Nutrition Information:

Yield:

8

Serving Size:

1 cup
Amount Per Serving: Calories: 93Total Fat: 2gSaturated Fat: 1gUnsaturated Fat: 2gCholesterol: 6mgSodium: 85mgCarbohydrates: 15gFiber: 5gSugar: 6gProtein: 5g

This information is provided as a courtesy and for entertainment purposes only. This information comes from online calculators. Although frugalmomeh.com attempts to provide accurate nutritional information, these figures are only estimates.

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