STEP 2/3
Put the above ingredients in a thinly spread oven gratin pan, put tomato sauce white sauce cube-shaped cut Mozzarella cheese, bake it in an oven preheated to 210 degrees for 15-18 minutes, and raise the temperature to 250 degrees to make it more golden for 1-2 minutes.
This is how to make gratin.
With pre-made white sauce and tomato sauce, you can make grilled vegetable gratin, blood, and #doria using stir-fried rice at any time.
: http://blog.naver.com/comble2/221415251192