Classic Cheeseburger with a Horseradish Sauce

Ingredients

• 4 brioche burger buns
• 4 tbsp salted butter
• 4 1/2 lb beef burger patties
• Salt and pepper to taste
• Seasoning salt
• 4 slices american cheese
• 1 beefsteak tomato, sliced
• Dill pickle slices
• Shredded lettuce
• 1/4 C mayonnaise
• 1/4 C buttermilk
• 2 tbsp Reese Prepared Horseradish
• 2 tbsp each fresh chopped dill and parsley
• 1 tsp each garlic powder and onion powder