We love this One-Skillet Green Bean Gratin recipe, a delicious holiday side dish! Simple to prepare and only one pot to clean up makes this dish dreamy!
2 pounds fresh green beans
4 tbsp unsalted butter
1 shallot, finely chopped
2 cloves garlic, finely chopped
4 tbsp all-purpose flour
1 tsp fine sea salt
1/2 tsp ground black pepper
1 1/2 cups half and half
2/3 cup shredded cheddar cheese
1/4 cup shredded parmesan
1/4 cup bread crumbs or panko
Pre heat the oven to 350˚ Fahrenheit with the rack in the middle.
Rinse the green beans, trim off the ends and cut the beans in 1/2.
Bring a large pot of salted water to a boil and cook the green beans about 12 minutes or until tender. Drain the beans.
In a 12 inch cast iron skillet, melt the butter over medium-low heat. Sauté the shallot and garlic about 3-4 minutes until softened and fragrant.
Mix in the flour, salt and pepper until smooth.
Reduce the heat to low. Add in the half and half. Cook until mixture thickens. Add the cheese and mix until well blended and melted.
Add the green beans to cheese mixture. Combine well.
Flatten the top of the casserole with the back of a spoon or spatula.
Top with the parmesan and breadcrumbs.
Bake for 30 minutes. Continue to broil for 5 minutes or until golden brown. Serve immediately in the skillet.