Step 1

Place potatoes, onion, and butter in a large microwave-safe dish.

Step 2

Mix flour and salt in a bowl; sprinkle over potatoes and gently toss until vegetables are coated.

Step 3

Pour milk over the potatoes.

Step 4

Cook in the microwave on high setting until potatoes are tender, about 15 minutes, stirring every 5 minutes.

Step 5

Allow potatoes to rest for 5 minutes before sprinkling with parsley and paprika for serving.