French Onion Green Bean Casserole

👨‍🍳 Instructions

1. 1

   {'id': 'step_0', 'step': 1, 'text': 'Gather the ingredients. Preheat the oven to 375 degrees F (190 degrees C). Grease a 9x13-inch casserole dish.'}

2. 2

   {'id': 'step_1', 'step': 2, 'text': 'Heat 2 tablespoons of butter in a large skillet over medium heat. Stir onions into the pan; cook and stir until very soft and golden brown, about 15 minutes. Stir in sherry vinegar. Transfer to a small bowl, and reserve.'}

3. 3

   {'id': 'step_2', 'step': 3, 'text': 'In the same skillet, melt 2 more tablespoons butter. Whisk in 2 tablespoons flour. Stirring constantly, cook over medium heat until flour smells like baked pie crust, about 3 minutes.'}

4. 4

   {'id': 'step_3', 'step': 4, 'text': 'Slowly whisk in milk, about 1/2 cup at a time, then whisk in nutmeg, cayenne pepper, and thyme. Bring to a simmer, and cook until thickened, whisking constantly, 3 more minutes. Transfer to a bowl and reserve.'}

5. 5

   {'id': 'step_4', 'step': 5, 'text': 'Melt remaining 2 tablespoons butter in clean skillet; stir in panko until all crumbs are coated; reserve.'}

6. 6

   {'id': 'step_5', 'step': 6, 'text': 'Bring a large saucepan of salted water to a boil over medium heat, and boil beans until bright green and crisp but not raw tasting, 3 to 4 minutes. Drain very well.'}

7. 7

   {'id': 'step_6', 'step': 7, 'text': 'Spoon half of the caramelized onions into the prepared casserole dish; top with green beans. Season with salt and black pepper. Spread reserved white sauce over the green beans; sprinkle with half of the Gruyere cheese. Top with the rest of the onions, and use the back of a spoon to push onions down into sauce and cheese. Top with the buttered panko crumbs, the remaining Gruyere, and Parmesan cheese.'}

8. 8

   {'id': 'step_7', 'step': 8, 'text': 'Bake in the preheated oven until hot throughout and lightly browned, about 30 minutes. Let sit 10 minutes before serving.'}

9. 9

   {'id': 'step_8', 'step': 9, 'text': 'Serve and enjoy.'}

📊 Nutrition Facts

Per serving (10 servings total)