Step 1: Preheat the oven to 425°F (220°C).
Step 2: Wash the baby red potatoes thoroughly under cold water, then pat dry. Cut each potato in half or quarters.
Step 3: In a mixing bowl, combine the halved potatoes with olive oil, melted butter, minced dill, and season with salt and pepper. Toss until well coated.
Step 4: Spread the potatoes in a single layer on a baking sheet, ensuring they are not overcrowded.
Step 5: Roast the potatoes in the preheated oven for 25-30 minutes, flipping halfway through for even browning.
Step 6: Check for doneness; they should be golden brown and tender when pierced with a fork.
Step 7: Remove from the oven, cool for a minute, and serve hot.