Boil the potatoes till fork tender and let cool for a couple of minutes.
In a bowl, mix the rosemary, garlic and olive oil. Set aside.
Preheat oven to 200 degrees Celsius.
Drizzle a baking pan with 1 tsp of olive oil.
Place the potatoes on the baking pan.
Using a potato masher or fork, smash the potatoes till 1.5 inches thick.
Drizzle the infused olive oil on the potatoes. Do include the rosemary and garlic bits too.
Move around the potatoes, so that the olive oil gets under the potatoes as well.
Sprinkle with kosher salt, black pepper and cheese.
Bake for 20-25 minutes until crispy and brown.