Mashed Potatoes In The Oven. Preheat oven to 350 degrees F 175 degrees C. Add potatoes and cook until tender but firm about 15 minutes.
Preheat oven to 350 degrees F 175 degrees C. Add potatoes and cook until tender but firm about 15 minutes. Step 2 Bring a large pot of lightly salted water to a boil.
Step 2 Bring a large pot of lightly salted water to a boil.
Step 2 Bring a large pot of lightly salted water to a boil. Add potatoes and cook until tender but firm about 15 minutes. Preheat oven to 350 degrees F 175 degrees C. Step 2 Bring a large pot of lightly salted water to a boil.