For my husband's birthday next week, I'd like to make sliders and homemade fries. When I make the fries, I usually fry them in batches and keep them warm in the oven at 300 degrees while I make additional batches. I found a recipe for sliders where you spread the meat in a pan and put in the oven at 400 for about 30 minutes. I'm trying to figure out how to do both at the same time, or which one I should make first and keep warm. Any suggestions on how to do this? I thought about keeping either the burgers or the fries warm in a slow cooker but both burgers and fries are great when they have just been cooked. Any advice?