Creamy Cheesy Carrot Casserole

I got this recipe from chef in training , it is her family favorite!
I love carrots, this is a way to get your kids to eat carrots!

Creamy Cheesy Carrot Casserole

Ingredients:
3 cups peeled and sliced carrots
1/4 cup butter
1/4 cup flour
2 cups half and half
1 tsp salt
1 tsp onion powder
1 1/4 tsp dry mustard
1/4 tsp pepper
1/4 tsp celery salt
6 - 7 slices white bread
8 oz shredded sharp cheddar cheese
3 Tbsp butter
Instructions:
Make white sauce:  In a large sauce pan, melt butter in saucepan, add flour, and stir to combine.  Once you have your roux, add half and half and stir constantly until sauce thickens.  Remove from heat and stir in salt, onion powder, dry mustard, pepper and celery salt.
In a 9 x 13 pan, layer peeled and sliced carrots, then white sauce, then evenly sprinkle shredded sharp cheddar cheese over white sauce.
Place slices of white bread in blender and blend until it turns into bread crumbs.
In a skillet, heat 3 Tbslp of butter and then saute bread crumbs in the butter until golden in color.
Evenly sprinkle bread crumbs over shredded cheese on the casserole
Cover casserole with foil and Bake at 350 degrees for 20 min.  After 20 minutes, uncover and bake for an additional 15 minutes.