Broccoli Cheddar Gratin

The moment I saw this recipe I knew I wanted to try it.  I love any kind of broccoli casserole or broccoli cheddar dish and this did not disappoint. It would make a great side dish with the upcoming holidays! This recipe was adapted from Melissa's Southern Style Kitchen.

8 cups steamed broccoli florets
8 tbsp butter
1 small onion (chopped)
1/3 cup flour
1 tsp garlic salt
1/4 tsp black pepper
3 cups whole milk
3 cups shredded sharp cheddar cheese
2/3 cup panko breadcrumbs


Heat oven to 350 and grease a 9x13 dish. In a saucepan melt 6 tbsp butter. Add the onion and saute for 2-3 minutes. Sprinkle the flour over the butter mixture then whisk. Stir in the garlic salt and pepper and cook for 2 minutes. Slowly add in the milk while whisking constantly. The sauce should begin to boil then lower the heat and let simmer for 5 minutes or until it thickens up. Stir in 2 cups shredded cheddar cheese until it has melted and the sauce is smooth. Add the steamed broccoli and stir well then pour into the greased baking dish. Sprinkle with the remaining shredded cheddar. Mix together the panko bread crumbs and 2 tbsp melted butter then sprinkle over the top of the dish. Bake for 35 minutes or until bubbly.