Salmon Casserole with Mashed Potatoes

From Jankowski Family Recipe Box 

Ingredients 

2 Tbsp	Butter
3 Tbsp	Flour
1 Can	Salmon
2 Tbsp	Catsup
1/2 Cup	Grated Cheese
2 Cups	Milk

Directions 

Melt butter, blend in flour.  Add liquid of 1 can of salmon and milk.  Cook until thick, stirring constantly.  Add catsup and grated cheese season with salt and pepper.  Break salmon up, top with mashed potatoes.  Bake at 375 degrees until potatoes are brown.