Baked Parmesan Broccoli

Ingredients:
4 bunches broccoli, cut into florets
6 T. butter, divided
1 small onion, finely chopped
1 garlic clove, minced
1/4 c. all-purpose flour
2 c. 2% milk
1 large egg yolk, beaten
1 c. grated Parmesan cheese
1/2 t. salt
1/8 t. pepper
1/2 c. seasoned bread crumbs

1. Preheat oven to 400°. Place half broccoli in a steamer basket; place basket in a large saucepan over one inch water. Bring to a boil; cover and steam 3-4 minutes or until crisp-tender. Place in a greased 13x9-in. baking dish; repeat with remaining broccoli.
2. Meanwhile, in a small saucepan over medium heat, melt 4 tablespoons butter. Add onion; cook and stir until tender. Add garlic; cook 1 minute longer.
3. Stir in flour until blended; gradually add milk. Bring to a boil; cook and stir 2 minutes or until thickened. Stir a small amount of hot mixture into egg yolk; return all to the pan, stirring constantly. Cook and stir 1 minute longer. Remove from heat; stir in the cheese, salt and pepper. Pour over broccoli.
4. In a small skillet, cook bread crumbs in remaining butter until golden brown; sprinkle over the top.
5. Bake, uncovered, 15-18 minutes or until heated through.

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