Looking for a quick and flavorful way to elevate your meals? This easy pepper onion relish recipe delivers tangy, sweet, and spicy goodness in under 30 minutes. Perfect for burgers, tacos, or as a versatile condiment, it’s simple to make with just 8 ingredients.
Ingredients
- 2 red bell peppers, finely diced
- 1 yellow onion, finely diced
- 1 jalapeño (optional, for heat)
- 1 cup apple cider vinegar
- ½ cup brown sugar
- 1 tsp mustard seeds
- 1 tsp salt
- ½ tsp black pepper
Step-by-Step Instructions
- Prepare ingredients: Finely dice bell peppers, onion, and jalapeño (remove seeds for milder heat).
- Cook: Combine all ingredients in a saucepan. Bring to a boil over medium-high heat.
- Simmer: Reduce heat to low. Simmer uncovered for 20-25 minutes, stirring occasionally, until thickened.
- Cool & Store: Let cool slightly. Transfer to sterilized jars. Refrigerate for up to 6 months.

Pro Tips for Perfect Relish
- Adjust heat: Add extra jalapeños or a pinch of cayenne for spicier relish. For mild versions, omit jalapeño entirely.
- Texture control: For chunkier relish, reduce simmering time to 15 minutes. For smoother texture, blend briefly after cooking.
- Storage hack: Freeze portions in ice cube trays for quick use in sauces or marinades.
How to Use Pepper Onion Relish
Transform ordinary dishes with this versatile condiment:
- Burgers & Hot Dogs: Top with a spoonful for tangy sweetness.
- Tacos & Burritos: Mix into salsa or use as a fresh topping.
- Grilled Meats: Pair with steak, chicken, or pork for added depth.
- Dips & Spreads: Blend with sour cream or cream cheese for a zesty dip.
- Pizza: Swap tomato sauce for a layer of relish before adding cheese and toppings.
Common Issues | Solutions |
---|---|
Relish too watery | Simmer uncovered for 5-10 extra minutes to evaporate excess liquid. |
Too sweet | Reduce brown sugar to ⅓ cup or add 1 tbsp lemon juice for balance. |
Lacks tang | Increase vinegar to 1¼ cups or add 1 tsp apple cider vinegar after cooking. |
How long does homemade pepper onion relish last in the refrigerator?
Properly stored in sterilized jars, homemade pepper onion relish lasts up to 6 months in the refrigerator. Always check for mold or off smells before use.
Can I make this without sugar?
Yes! Substitute brown sugar with ⅓ cup honey or maple syrup. For sugar-free versions, use 1-2 tbsp of stevia or monk fruit sweetener. Note: Sugar-free versions may have a shorter shelf life (3-4 months).
Can I can this relish for shelf-stable storage?
Yes! Process in a water bath canner for 15 minutes (adjust for altitude). Properly canned relish keeps for 12-18 months in a cool, dark place. Always check seals before storing.
