Asparagus Cassarole

By clbrosnan

Ingredients

• 1/3 c butter
• 3 lb. asparagus, trimmed and cut into one inch pieces
• 1 onion chopped
• 1 8 oz package sliced baby bella mushrooms
• 1/4 c all purpose flour
• 1 1/4 c whole milk
• 1 c shredded Swiss cheese1 c sour cream
• 1 tsp salt
• 1 tsp lemon zest
• 1/2 tsp ground black pepper
• 1 can french fried onions

Preparation

Step 1

Preheat oven to 350. Spray a 13/9 inch baking dish with non stick cooking spray.

In a large skillet, melt butter over medium heat.Add asparagus, onions and mushrooms; cook for 5 minutes or until vegetables are tender. Add flour; cook for 2 minutes, stirring constantly.Add milk and cook for 5 minutes stirring frequently, until mixture is thickened. Stir in cheese, sour cream,salt, lemon zest, and pepper.
Spoon mixture into prepared pan and bake for 30 minutes or until hot and bubbly. Top with onions, and bake 5 minutes longer