Turkey and White Cheddar with Caramelized Onion & Grape Grilled Cheese

Ingredients (10)

• 3 tablespoons butter
• 1 tablespoon vegetable oil
• 1 small onion
• 12-15 red seedless grapes
• 1 tablespoon sage
• 1 pound turkey deli meat
• 2 cups white cheddar cheese
• 1 cup arugula leaves
• 8 slices sourdough bread
• salt and pepper