Scrambled Egg Casserole

Ingredients

• 1/2 c. butter or oleo, divided
• 2 Tbsp. all-purpose flour
• 1/2 tsp. salt
• 1/8 tsp. pepper
• 2 c. milk
• 1 c. (4 oz.) American cheese, shredded
• 1 c. fully cooked ham
• 1/4 c. sliced green onion
• 12 eggs, beaten
• 1 (4 oz.) can sliced mushrooms, drained
• 1 1/2 c. soft bread crumbs