Onion Sandwiches
Sweet and tangy onion sandwiches feature thinly sliced onions soaked in vinegar, layered with mayonnaise and powdered sugar on white bread for a unique snack or appetizer.
Ingredients
Instructions
- Chop the large sweet onion finely.
- Combine the chopped onions with water, vinegar, and sugar; bring to a boil.
- Let the mixture cool overnight.
- Drain the onions the next day.
- Use white bread, trimming off brown edges.
- Spread mayonnaise and powdered sugar on the bread slices.
- Add about 1 teaspoon of the drained onions onto each slice.
- Put the slices together to form finger sandwiches.
- Cut the sandwiches into finger-sized pieces.
- They can be frozen and thawed to use later.
Tips & Substitutions
For a milder flavor, soak the chopped onions in cold water for 30 minutes before cooking. You can substitute white vinegar with apple cider vinegar for a fruity twist. If you prefer a creamier texture, mix the mayonnaise with a bit of sour cream. This sandwich can be adapted using other vegetables like cucumbers for a refreshing crunch, or browse more American recipes for variations.
Serving Suggestions
Serve these onion sandwiches as a delightful appetizer at your next gathering or picnic. They pair wonderfully with a light salad like Salad Relish or can be enjoyed alongside a bowl of soup. Consider serving them with a side of Joann's Microwave Caramel Popcorn for a sweet contrast. For an elegant touch, garnish with fresh herbs.
Storage & Reheating
Store leftover sandwiches in an airtight container in the refrigerator for up to 3 days. To maintain crunchiness, it's best to keep the drained onions separate and assemble the sandwiches just before serving. If you want to freeze them, wrap individual sandwiches tightly in plastic wrap and place them in a freezer-safe bag, ensuring to remove as much air as possible.
Nutrition & Diet Analysis (per serving)
Each serving of Onion Sandwiches contains roughly 151 calories, with 2g protein, 34g carbohydrates, and 1g fat. It is an excellent source of vitamin C (28% of the Daily Value), and a good source of dietary fiber. It also contributes 4g of dietary fiber toward your daily target.
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Frequently Asked Questions
Can I make the onion mixture ahead of time?
Yes, you can prepare the onion mixture a day in advance. Just ensure it cools completely before storing it in the refrigerator. This allows the flavors to meld beautifully, enhancing the overall taste of your sandwiches.
Is there a vegan alternative for mayonnaise?
Absolutely! You can use a vegan mayonnaise or a mixture of mashed avocado and a splash of lemon juice as a great alternative. This will keep your onion sandwiches creamy while making them suitable for vegan diets.
What type of bread works best for these sandwiches?
White bread is traditional for these onion sandwiches, but you can also use whole grain or gluten-free bread if preferred. Just ensure the bread is soft enough to hold the fillings without becoming too soggy.
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).