Beef & Blue Cheese Sliders Recipe | Chateau Ste. Michelle

Ingredients

• 2 red onions, thinly sliced
• 2 Tbsp olive oil
• 1/2 cup mayonnaise
• 1/4 cup crumbled blue cheese
• 2 tsp red wine vinegar
• 1 Tbsp plus 1 tsp finely chopped fresh rosemary, divided
• 1/2 tsp garlic powder
• 1/8 tsp granulated sugar
• 2 lb ground beef
• 2 Tbsp Worcestershire sauce
• 3 cloves garlic, minced
• 2 cups baby arugula