Step 1:
1. Place the sliced Corned Beef in a oven proof dish. Step 2:
2. Chuck the onion and carrot in with it Step 3:
3. Stir the mustard and pepper in with the stock and pour on top Step 4:
4. Cook in a medium oven until the carrots and onions are cooked Step 5:
5. Once cooked, remove as much as the solids from the fluid as possible. Step 6:
6. Pour the liquid into a pan, and heat on the hob, until boiling vigorously. Step 7:
7. Remove from the heat, and pour in the corn flour, stirring constantly, until smooth. Step 8:
8. Return to the heat and bring to the boil. Step 9:
9. Serve the meat, onions and carrots with mashed potato and veg, and pour over the gravy. Step 11:
The corned beef can be frozen, then defrosted and reheated in the microwave. 