Cajun Burgers

Ingredients (14)

• 1 lb. ground beef
• 1 egg yolk
• 1/4 cup shredded Parmesan cheese
• 1/4 cup fine sourdough breadcrumbs
• 1 1/2 teaspoons Cajun or blackening seasoning
• 1 teaspoon Kosher salt (omit if your Cajun seasoning includes salt)
• 1 red onion, sliced
• 4 leaves lettuce
• 4 slices sharp cheddar cheese
• 4 buns, buttered on the inside
• 1/4 cup mayo or Miracle Whip (we used Miracle Whip)
• 1 Tbsp. ketchup
• 1 tsp. molasses or maple syrup
• 1 1/2 teaspoons Cajun seasoning