Potato Preparation – Will Potatoes Discolor If Pre-Made for Scalloped Potatoes?

Microwave the potatoes before putting them in the oven for about 7 minutes(start with 5 minutes, add 30 seconds every time till done), covered with a little water (very little, couple of spoons full)(potatoes whole or sliced)

Make sure you're not using a 'heavy' oven dish, glass ones can taka a long time to heat up. Place the oven dish into the oven while heating and add a drop of oil. When you put in the potatoes you should hear a little 'hiss' indicating the termperature is right.

Here's what I'd suggest:

1. Reverse your food positions. Roast the meat toward the bottom of the oven and the potatoes toward the top.
2. Place the potatoes on a jelly-roll sheet, not in a roasting pan.
3. Stagger the pan positions. The less that they are exactly on top of one another the better. Yet, at the same time, no pan can be so close to any oven wall that it cuts off circulation. So, choose pans sizes that will allow for this. During baking, rotate each pan 180 degrees.
4. It takes more energy to heat more items. When you put more items into the oven than called for by the recipe, you must increase either the heat, or the time, or both.