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Green Bean Casserole – The Best Cheesy Holiday Side Dish

green bean casserole in white dish with crispy topping

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This easy green bean casserole is a creamy, cheesy classic topped with crispy fried onion rings—perfect for Thanksgiving or any comforting meal.

Ingredients

Scale
  • 2 lbs fresh French style green beans
  • 4 tbsp salted butter
  • ½ medium yellow onion, diced
  • Pinch of salt
  • Pinch of pepper
  • ¼ tsp season-all season salt
  • 10.5 oz can cream of mushroom soup
  • ¼ cup half and half
  • 1 cup medium cheddar cheese, grated and divided
  • 6 oz French fried crispy onion rings
  • Non-stick cooking spray

Instructions

1. Preheat oven to 350°F.

2. Boil green beans in water until they reach your desired tenderness, then drain and set aside.

3. In a sauté pan over medium-low heat, melt the butter and cook the diced onion until soft.

4. Sprinkle in salt, pepper, and season salt. Stir to combine.

5. Mix in the cream of mushroom soup and half and half. Bring to a low boil, then reduce heat to low.

6. Stir in a small handful of grated cheddar cheese. If mixture is too thick, add a few splashes of half and half.

7. Add the cooked green beans and ⅔ of the crispy fried onion rings to the pan. Stir to coat everything evenly.

8. Spray a 9×13 casserole dish with cooking spray and pour the green bean mixture in, spreading evenly.

9. Top with the remaining grated cheese and crispy fried onions.

10. Bake uncovered for 30 minutes until hot and bubbly.

Notes

You can substitute fresh green beans with frozen—just use 25% less by weight.

Freshly grated cheese melts better and tastes superior compared to pre-grated varieties.

This casserole is a perfect make-ahead side dish for holidays or gatherings.