What oven symbol do you use for baking brownies?

For baking brownies, you typically use the symbol for conventional baking, which often resembles a rectangle with lines at the top and bottom, indicating both top and bottom heating elements. If your oven has a fan or convection option, you may also consider using that symbol, which looks like a fan, as it can promote even baking. Always preheat the oven to the recommended temperature for best results.