Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
Bring a large pot of water to a boil.
Add potatoes and boil for 8 minutes until slightly tender.
Drain the potatoes well.
In the same pot, melt butter with olive oil.
Add potatoes back to the pot along with garlic salt and pepper.
Toss until evenly coated.
Arrange potatoes skin side up on the baking sheet.
Bake for 30–40 minutes until golden and crispy.
Serve hot. These Crispy Oven Baked Potato Bites are best enjoyed fresh.