Hash Browns with potatoes

3 tablespoons all-purpose flour 1 3/4 cups evaporated skim milk 1 dash cumin 3/4 teaspoon dry mustard 3/4 cup sweet corn 1/4 teaspoon pepper 1 dash salt 4[...]

1 1/2 cups onions , chopped vegetable oil cooking spray 3 tablespoons all-purpose flour 1/2 teaspoon dry mustard 1/4 teaspoon salt 1 1/4 cups skim milk 1/2[...]