Ingredients

• 1 lb ground beef
  
• 1 tablespoon yellow mustard (more for serving)
  
• 2 tablespoons ketchup (more for serving)
  
• 1 lb refrigerated pizza dough
  
• 1 tablespoon olive oil
  
• 2 teaspoons sesame seeds
  
• 2 cups shredded American cheese
  
• dill pickle rounds
  
• ¹/₄ small red onion, diced, rinsed and drained