Ingredients:
- 1.5 lbs fresh green beans, trimmed and halved
- 1 tsp kosher salt
- 12 oz Cremini mushrooms, finely chopped
- 2 tbsp unsalted butter
- 2 cloves garlic, minced
- 1/4 cup all-purpose flour
- 1 cup whole milk
- 1/2 cup heavy cream
- 1/2 cup chicken or vegetable stock
- 1 tsp soy sauce
- 1/2 tsp ground black pepper
- 6 oz crispy fried onions
- 1/4 cup grated Parmesan cheese
Instructions:
- Bring a large pot of salted water to a rolling boil. Add 1.5 lbs of fresh green beans and blanch for 5 minutes. Note: This softens the fiber just enough while keeping the color vivid.
- Immediately drain the beans and submerge them in an ice water bath. Once cold, drain them again and pat them completely dry with a clean kitchen towel.
- In a large 12 inch skillet, melt 2 tablespoons of butter over medium high heat. Add 12 oz of chopped mushrooms and sauté until they release their moisture and develop a deep brown crust. Cook until the pan sounds like it is searing, not steaming.
- Add 2 cloves of minced garlic and cook for 1 minute until fragrant. Note: Garlic burns quickly, so keep it moving.
- Sprinkle 1/4 cup flour over the mushrooms. Whisk for 1-2 minutes until the flour smells slightly nutty and toasted.
- Gradually whisk in 1/2 cup chicken stock, 1 cup whole milk, and 1/2 cup heavy cream. Stir constantly to prevent lumps from forming.
- Stir in 1 tsp soy sauce and 1/2 tsp black pepper. Simmer over medium low heat for 5-8 minutes until the sauce is thick enough to coat the back of a spoon.
- Preheat your oven to 375°F (190°C). In your 9x13 baking dish, fold together the blanched beans, the finished mushroom sauce, and about 1.5 oz (1/4 of the bag) of the crispy onions.
- Spread the mixture evenly and top with the remaining 4.5 oz of crispy onions and 1/4 cup grated Parmesan cheese. Ensure the onions form a complete, even layer.
- Bake for 25-30 minutes until the sauce is violently bubbling at the edges and the topping is deeply golden. While the casserole is in the oven, it's a great time to prep other sides. If you’re looking for something else to bake, these [Zucchini Fritters](https://goodierecipes.com/recipes/zucchini-fritters/) are a fantastic, crispy addition to a vegetable forward meal, and they use a similar stovetop to oven logic to get that perfect texture.