Turn your 5 or 6 quart electric pressure cooker to saute and add the butter. Heat until melted and add the onion and garlic. Saute for 2-3 minutes until translucent.

Add the orzo and stir in with the butter and onion. Top with the frozen vegetables, frozen shrimp and chicken stock.

Cook on high pressure for 3 minutes. When the cooking time is done, turn the valve to vent and quick release the pressure.

The shrimp can be served with the shells on or, If desired, gently remove cooked shrimp from the rice and peel. Add peeled shrimp back into the rice along with the lemon juice and parsley and serve.