Bean Rarebit

Ingredients (8)

• + ¼ cup butter add to pantry
• + ¼ cup chopped onion add to pantry
• ✓ ¼ cup all-purpose flour
• + ½ teaspoon salt add to pantry
• + 2 cups milk add to pantry
• + 1 teaspoon Dijon mustard add to pantry
• + 2 cups shredded Cheddar cheese add to pantry
• ✓ 1 (15.5 ounce) can white beans, drained and rinsed