01 -
In a big pot, throw in the potato chunks and cover with cold water. Add about a tablespoon of salt. Crank up the heat till boiling, then turn it down and simmer for 12-16 minutes. Check them by poking with a fork—they should be nice and tender by then. Drain them well.
02 -
Heat your oven to 400°F (200°C) and cover a baking sheet with foil to make cleanup a breeze. Mix the drained potatoes in olive oil, garlic powder, salt, and pepper until every piece is coated perfectly.
03 -
Spread the potatoes out on the lined baking sheet. Give them some space so they crisp up right. Roast until they're golden and crackly outside—about 30 minutes. Flip them midway so they get browned evenly.
04 -
Mix sour cream and mayo in a bowl. Add almost all the scallions, dill, and parsley, keeping a bit of each back for garnish. Toss in the Dijon mustard and lemon juice. Blend till smooth. Salt and pepper it to your taste.
05 -
Hold off on combining everything until it's just about time to eat. That way, the potatoes stay crisp while they soak in all that creamy goodness.
06 -
Transfer the potato mix to a serving bowl. Sprinkle the leftover herb bits and scallions on top for a finished look. Serve right away so the potatoes keep some crunch.