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Golden-brown baked green bean casserole with crispy fried onion topping in a ceramic baking dish on a rustic wooden table
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Green bean casserole

Master green bean casserole with our complete guide. Discover classic recipes, healthy alternatives & gourmet variations. Perfect for Thanksgiving. Make-ahead friendly
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Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American
Calories: 285
Ingredients Method

Ingredients
  

  • 2 cans 10.5 oz each cream of mushroom soup
  • 1 cup milk or heavy cream
  • 2 teaspoons garlic powder
  • 1 teaspoon black pepper
  • 1 teaspoon salt
  • 1/4 teaspoon cayenne pepper optional
  • 2 bags 10 oz each frozen green beans OR 4 cups fresh green beans
  • 2 cups fresh mushrooms sliced
  • 1 medium onion diced
  • 2 cloves garlic minced
  • 2 tablespoons butter
  • 2 cups shredded sharp cheddar cheese
  • 3 cups crispy fried onions divided
  • Salt and pepper to taste
  • Fresh thyme or rosemary for garnish optional

Method
 

  1. Step 1: Prepare the Vegetables
  2. If using fresh green beans, blanch them in boiling salted water for 3-4 minutes until tender-crisp, then drain. If using frozen, thaw and drain well. In a large skillet, melt butter over medium-high heat. Sauté diced onions and sliced mushrooms for 5-7 minutes until softened. Add minced garlic and cook for 1 more minute until fragrant.
  3. Step 2: Create the Sauce Base
  4. In a large mixing bowl, combine cream of mushroom soup, milk, garlic powder, black pepper, salt, and cayenne pepper. Stir until smooth and creamy.
  5. Step 3: Combine Ingredients
  6. Add the prepared green beans and sautéed mushroom mixture to the cream sauce. Fold in the shredded cheddar cheese. Reserve 2/3 of the fried onions and fold in only 1/3 into the casserole. Stir gently until evenly distributed. Adjust seasonings as needed.
  7. Step 4: Transfer to Baking Dish
  8. Butter a 9x13-inch baking dish and pour the green bean casserole mixture into it, spreading evenly. The mixture should be creamy but not soupy.
  9. Step 5: Initial Bake
  10. Bake uncovered at 350°F for 25 minutes. The casserole should be heated through and bubbling around the edges.
  11. Step 6: Add Crispy Topping and Finish
  12. Remove from oven and sprinkle the reserved fried onions evenly over the top. Return to oven and bake for an additional 5-10 minutes until onions are golden brown and crispy.
  13. Step 7: Cool and Serve
  14. Remove from oven and let cool for 5 minutes before serving. This allows the casserole to set slightly. Garnish with fresh herbs if desired. Serve warm and enjoy!