A question about a recipe: Salted Double Chocolate Peanut Butter Cookies

I have a question about step 5 on the recipe "Salted Double Chocolate Peanut Butter Cookies" from Food Blogga. It says:

"Bake cookies for 12-14 minutes, until the edges are firm. It's OK if the centers are a tad soft. They'll firm up as they cool. Transfer to a wire rack to cool. Cool completely before storing in an air-tight container, for up to 5 days."
What temperature should i bake them at in celcius?