5 from 12 votes
Green Bean Casserole From Scratch
This Green Bean Casserole From Scratch combines fresh green beans, sliced portobello mushrooms, and onions in a creamy gruyere cheese sauce topped with crispy fried onions. Baking it creates a bubbly, golden crust that contrasts well with tender vegetables beneath. The casserole captures classic flavors with homemade sauce and fresh ingredients, making it a comforting side dish choice.
Prep Time
10 mins
Cook Time
30 mins
Total Time
40 mins
Servings:
8
Calories:
262 kcal
Course:
Side Dish
Cuisine:
French
Ingredients
- 1 lb Green bean trimmed, fresh
- 1 lb portobello mushrooms sliced
- 2 onion sliced
- 2 tablespoons parsley chopped
- 4 tablespoons butter
- 2 tablespoons flour
- 1 cup milk
- 1 cup gruyere cheese grated
- 3.5 oz fried onions crispy
- salt to taste
- black pepper to taste
Instructions
- Preheat oven to 400 Degrees Fahrenheit
- In a large microwave-safe bowl place the Green Beans with 2 teaspoons of water, salt, and pepper. Microwave for 2-3 minutes or until cooked. Place them in cold water to stop cooking, drain and set aside
- In a large wide mouth skillet, melt the butter over medium heat. Add the mushrooms and cook for 2-3 minutes or until softened
- Add the onions, parsley, salt, and pepper and cook until the onions have softened. About 5 minutes.
- Pour in the flour and cook while stirring for 1 minute or until the flour has cooked
- Add in the milk and the green beans and mix until the sauce has thickened. Check for seasoning and add more salt and pepper if needed
- Place this mixture in an oven safe dish
- In a small bowl mix the onions and the cheese. Sprinkle them over the green bean mixture
- Bake for 15-18 minutes or until browned and bubbly
- Remove from heat and let it sit for 5-10 minutes before cutting
- Enjoy!
Cup of Yum
Nutrition Information
Calories
262kcal
(13%)
Carbohydrates
16g
(5%)
Protein
8g
(16%)
Fat
18g
(28%)
Saturated Fat
9g
(45%)
Cholesterol
36mg
(12%)
Sodium
232mg
(10%)
Potassium
425mg
(9%)
Fiber
2g
(8%)
Sugar
6g
(12%)
Vitamin A
855IU
(17%)
Vitamin C
10.3mg
(11%)
Calcium
233mg
(23%)
Iron
1mg
(6%)
Nutrition Facts
Serving: 8 Serving
Amount Per Serving
Calories 262
% Daily Value*
| Calories | 262kcal | 13% |
| Carbohydrates | 16g | 5% |
| Protein | 8g | 16% |
| Fat | 18g | 28% |
| Saturated Fat | 9g | 45% |
| Cholesterol | 36mg | 12% |
| Sodium | 232mg | 10% |
| Potassium | 425mg | 9% |
| Fiber | 2g | 8% |
| Sugar | 6g | 12% |
| Vitamin A | 855IU | 17% |
| Vitamin C | 10.3mg | 11% |
| Calcium | 233mg | 23% |
| Iron | 1mg | 6% |
* Percent Daily Values are based on a 2,000 calorie diet.