Wraps & sandwiches
Caramelized Onion Bean Toasties
Caramelized Onion Bean Toasties with onions, butter, olive oil.

Make this recipe
Caramelized Onion Bean Toasties
- Servings
- 2
- Prep
- ~15 min
- Cook
- ~30 min
- Rest / chill
- ~0 min
- Total
- ~45 min
Timings are estimates. Optional preparation may take longer. Ingredient checkboxes are temporary and reset when you leave the page.
Ingredients
Method
- Cook onions in oil and half the butter over medium-low heat for 20–25 minutes, stirring often, until soft and deeply golden.
- Mash beans with mustard and salt. Spread onto two bread slices, top with onions and cheddar and close with remaining bread.
- Butter the outsides with remaining butter and toast in a skillet over low heat until crisp on both sides and cheese melts.
A little note
Caramelizing onions takes patience; add a spoonful of water if the pan catches.
Cooking tips
- Cook onions slowly and stir frequently; dark patches before they soften mean the heat is too high.
- Toast the filled sandwich over low heat so the cheddar melts before the bread gets too dark.
Follow package instructions and safe internal-temperature guidance. Recipe ideas for your kitchen; timings are estimates. Read our editorial approach.