Buttermilk Blue Potatoes Au Gratin Recipe

• 7 med Maine russet potatoes, parboiled, peeled, and thinly sliced
• 2 1/2 Tbsp. Unsalted butter
• 1 x Garlic clove, crushed
• 2 x Shallots or possibly green onions, chopped
• 2 Tbsp. Unbleached flour
• 1 1/2 c. Lowfat milk, at room temperature
• 1 c. Buttermilk, at room temp
• 1 tsp White pepper
• 1/4 c. Mayonnaise
• 1 tsp Dijon mustard
• 1/4 tsp Worcestershire sauce
• 1/4 c. Fresh parsley, minced
• 2 ounce Blue cheese, crumbled, divided
• 3 c. Raw mushrooms, sliced
• 1 c. Monterey jack, grated
• 1 1/2 c. Potato chips, coarsely crushed
• 1 x (10 ounce) pkg frzn minced broccoli, thawed
• 1 Tbsp. Canned pimento, diced

Directions