Preheat oven to 400 degrees. Line baking sheet with parchment paper and set to the side.
Wash your potatoes and then cut into bite size pieces.
Add potatoes to a large bowl, pour in olive oil and toss together. Add in Ranch dressing mix and garlic powder and stir so potatoes are coated.
Pour potatoes onto the parchment lined baking sheet and spread them out. Sprinkles with salt and pepper.
Cover baking sheet with aluminum foil and bake for 20 minutes. Remove foil and bake for additional 20 minutes. Check to make sure potatoes are tender and a fork easily cuts them.
Sprinkle shredded cheddar cheese over potatoes and place back in the oven for a couple of minutes until the cheese has melted.