Ingredients

• 4 tablespoons Kerrygold butter (salted or unsalted)
  
• 1 medium yellow onion, chopped
  
• Kosher salt
  
• Freshly ground black pepper
  
• 5 anchovies, minced and smashed into a paste
  
• 2 garlic cloves, minced
  
• ¹/₄ cup tomato paste
  
• 3 medium heads broccoli (about 2 pounds), cut into small, bite-sized florets
  
• 1 cup chicken or vegetable stock
  
• 3 ¹/₂ cups (or 1 large 29-ounce can) cooked cannellini beans
  
• Finely grated zest from 1 lemon
  
• 1 tablespoon red wine vinegar
  
• 1 cup shredded cheddar cheese (such as Kerrygold Mild or Savory Cheddar)