In a 1-quart, heat-resistant, non-metallic measuring cup place butter. Heat, uncovered, in Microwave Oven 1 minute or until melted.
Stir in flour and salt until smooth. Gradually add milk, stirring constantly.
Heat, uncovered, in Microwave Oven 5 minutes or until thickened and smooth. Stir occasionally.
Stir in cheese until melted.
Place 1 package of asparagus in a deep, 2-quart, heat- resistant, non-metallic baking dish.
Sprinkle 1/2 of toasted almonds over asparagus. Pour half of sauce over almonds.
Repeat layers with remaining asparagus, almonds and sauce.
Heat, uncovered, in Microwave Oven 8 to 10 minutes or until heated through.
Before serving, sprinkle with paprika, if desired.