First, preheat your oven to 425°F (220°C). While that heats, give your baby potatoes a good scrub. These little guys grow close to the soil, so it’s important to clean them well. Then pat them completely dry with paper towels—moisture is the enemy of crispiness.
Once dried, cut each potato in half lengthwise. This flat surface is essential because it makes direct contact with the baking sheet, helping you get that amazing crispy crust.
In a large bowl, melt your butter and stir in olive oil, minced garlic, salt, pepper, and rosemary. The aroma at this point is mouthwatering already! Once everything is mixed, toss your halved potatoes in the bowl and make sure they’re all well coated.
Now line your baking sheet with parchment paper and arrange the potatoes cut-side down. This is where the magic happens—flat sides directly against the heat. Roast them for 35–45 minutes until golden brown and crisped at the edges.
Once they’re out of the oven, toss them with chopped parsley while still hot. That last bit of fresh herb adds color and brightens the overall flavor. Serve immediately for best texture.