Preheat oven to 350°. Coarsely chop broccoli. Cook broccoli and 1 Tbsp. salt in a Dutch oven in boiling water to cover 3 minutes or until crisp-tender; drain.
Melt butter in a medium-size heavy saucepan over low heat; whisk in flour until smooth. Cook, whisking constantly, 1 minute. Gradually whisk in milk; cook over medium heat, whisking constantly, until mixture is thickened and bubbly. Stir in cheeses and 1/4 tsp. salt until melted. Stir in broccoli.
Place in a lightly greased 11- x 7-inch baking dish; sprinkle with crackers.
Bake at 350° for 30 minutes or until golden and bubbly.
Creamy Broccoli Bake With Chicken: Prepare recipe as directed through Step Stir in 1 lb. chopped cooked chicken breast. Proceed with recipe as directed.
Pretty good. Strong blue cheese flavor.