Boil potatoes until fork-tender; drain and let cool slightly.
Place potatoes on a baking sheet and gently smash each one using the bottom of a glass or fork.
Drizzle with melted butter and milk, then sprinkle evenly with FreshJax® Toasted Onion Seasoning.
Bake at 425°F for 20–25 minutes, or until crispy on the edges and golden brown.
Adjust seasoning to taste and serve warm.