
This contemporary Green Bean Casserole recipe is prepared from the ground up, incorporating crisp green beans, earthy cremini mushrooms, aromatic shallots, and a generous sprinkle of grated Parmesan cheese.
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In a large pot, bring water to a vigorous boil. Once boiling, introduce the green beans and blanch them for 2 minutes (or extend to 6-8 minutes if you prefer a softer texture). Drain them in a colander and rinse under cold water or immerse in an ice bath to halt the cooking process.
While the green beans are cooling, prepare the topping by heating a medium skillet over medium heat. Add the shallots and sauté them for approximately 3-5 minutes, stirring occasionally until they achieve a golden brown hue.
Lower the heat to medium-low, then incorporate the breadcrumbs, grated cheese, and thyme. Continue to sauté for about 5-6 minutes, stirring frequently to ensure they brown evenly and do not burn.
Preheat your oven to 375°F. Lightly coat a 13 x 9 inch baking dish with cooking spray.
In a large sauté pan, heat oil over medium-high heat. Add the shallots and sauté for 1 to 2 minutes. Then, add the mushrooms, seasoning them with salt and pepper, and sauté for an additional 6-8 minutes, stirring occasionally.
Dust the mushrooms with flour, stirring continuously for about a minute, then gradually pour in the chicken stock followed by the milk.
Bring the mixture to a gentle boil, stirring occasionally until it thickens, which should take about 3 minutes. Stir in the grated cheese until melted.
Fold in the blanched green beans, mixing thoroughly, and adjust seasoning with salt and pepper as desired; transfer the mixture to the prepared baking dish.
Finish by sprinkling the toasted breadcrumbs on top and bake for approximately 30 minutes.