Roasted Potato and Cauliflower Salad - Inspired Cuisine

Ingredients

• 6-8 baby Yukon Gold or red skinned potatoes
• 1/3 medium head cauliflower florets
• drizzle of olive oil
• kosher salt and freshly ground black pepper
• 1 medium thinly sliced yellow onion
• 1 tbsp Hellman's mayonnaise
• 1 tbsp crème fraîsche, or 1 tbsp sour cream
• 1 tsp Worcestershire sauce
• 1/2 tsp garlic salt
• 1/2 tsp onion powder
• 3 whole thinly sliced scallions