Finely chop the red potatoes, onion, and corned beef.

Combine chopped potatoes, onion, parsley flakes, salt, and pepper in a 4-cup measure.

Cover tightly with plastic wrap and microwave on 650 watts for 3 minutes; stir.

Microwave again on 650 watts for 2 to 4 minutes longer or until potatoes are tender.

Place the finely chopped corned beef in a 2-quart casserole dish.

Cover and microwave on 650 watts for 2 minutes; stir.

Microwave again on 650 watts for 1 to 3 minutes longer.

Stir the cooked potatoes and onion into the corned beef.

Choose one of the following cooking methods to finish the dish:

Method 1: Cover the casserole dish and microwave on 350 watts for 8 to 10 minutes, stirring after 4 minutes.

Method 2: Place an empty 10-inch browning dish in the microwave oven.

Microwave the browning dish on 650 watts for 5 minutes to preheat.

Melt 2 teaspoons of shortening in the preheated browning dish.

Spread the corned beef mixture evenly in the preheated browning dish.

Cover with the lid that came with the browning dish and microwave on 350 watts for 6 to 9 minutes, or until the bottom is nicely browned.