Copper Pennies (Marinated Carrots)
These tangy-sweet marinated carrots are about to become your secret weapon for looking like you actually know what you’re doing in the kitchen.

The best part is that they taste even better the next day, which means you can make them ahead and pretend you’re just naturally organized.

Picture this: tender roasted carrots swimming in a sweet and sour marinade that’s basically the love child of barbecue sauce and pickle brine.

This old-fashioned recipe has been making people ask “what’s in this?” for decades, and the answer is surprisingly simple ingredients you probably already have.

The carrots come out with this gorgeous glossy coating and a flavor that’s equal parts nostalgic comfort food and sophisticated side dish.

Fair warning: once you serve these at a potluck, you’ll be the person everyone expects to bring “those amazing carrots” to every gathering from now on.

Ingredients
For the Roasted Carrots
- 1 pound raw carrots
- 2 tablespoons olive oil
- ½ teaspoon kosher salt
- ¼ teaspoon ground black pepper
- ½ green bell pepper, seeded and chopped
- ¼ cup finely minced onion
For the Marinade
- ½ cup tomato sauce
- ¼ cup olive oil
- ⅓ cup white vinegar
- ½ teaspoon Worcestershire sauce
- ½ teaspoon ground mustard
- ¼ cup granulated sugar
- ½ teaspoon kosher salt
- ¼ teaspoon ground black pepper
Instructions
Prepare the Carrots
- 1 Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
- 2 Peel the carrots using a vegetable peeler or the edge of a knife, then slice them into ¼ to ⅓-inch thick medallions. Consistent thickness ensures even roasting, so take your time with this step.
- 3 Place the carrot medallions on your prepared baking sheet and drizzle with 2 tablespoons olive oil. Season with ½ teaspoon kosher salt and ¼ teaspoon black pepper, then toss everything together with your hands or tongs until every piece is evenly coated.
- 4 Spread the carrots out in a single layer, making sure they’re not overlapping. Overcrowded carrots will steam instead of roast, and you want those beautiful caramelized edges.
Roast the Carrots
- 5 Roast for 10-12 minutes for crisp-tender carrots that still have a slight bite. If you prefer your carrots more well-done, leave them in for an additional 2-3 minutes. Test for doneness by piercing with a fork – it should go through easily but with slight resistance.
- 6 Remove the carrots from the oven and let them cool completely on the baking sheet. This cooling step is crucial because hot carrots will make your marinade watery.
Make the Marinade
- 7 While the carrots are roasting, combine all marinade ingredients in a small saucepan: ½ cup tomato sauce, ¼ cup olive oil, ⅓ cup white vinegar, ½ teaspoon Worcestershire sauce, ½ teaspoon ground mustard, ¼ cup granulated sugar, ½ teaspoon kosher salt, and ¼ teaspoon black pepper.
- 8 Bring the mixture to a rolling boil over medium heat, stirring occasionally to dissolve the sugar completely. The marinade should be glossy and slightly thickened after about 3-4 minutes of boiling.
- 9 Remove the marinade from heat and let it cool to room temperature, about 15-20 minutes. Hot marinade will partially cook your vegetables and make them mushy.
Marinate and Serve
- 10 In a large mixing bowl or storage container, combine the cooled roasted carrots, chopped green bell pepper, and minced onion. Pour the cooled marinade over everything and stir gently to coat all pieces evenly.
- 11 Cover tightly and refrigerate for at least 8 hours or overnight. The flavors develop and intensify during this time, so don’t skip this crucial step.
- 12 To serve, either drain the excess marinade or use a slotted spoon to transfer the vegetables to your serving dish. The carrots will keep their vibrant color and tangy-sweet flavor for up to 5 days in the refrigerator.
Recommended Equipment and Kitchen Tools
Essential Tools (for best results)
- Sharp chef’s knife or mandoline slicer for uniform carrot medallions – consistent thickness means even cooking
- Large rimmed baking sheet with parchment paper for easy roasting and cleanup
- Small saucepan with heavy bottom for even heat distribution when making the marinade
- Large mixing bowls for combining ingredients and marinating
Helpful Upgrades
- Kitchen scale for precise measurements, especially helpful when scaling the recipe up or down
- Immersion blender if you need to puree whole tomatoes as a substitute for tomato sauce
- Glass or ceramic storage containers that won’t absorb the acidic marinade flavors like plastic might
- Silicone spatula for stirring the marinade without scratching your saucepan
Nice-to-Have Options
- Vegetable peeler with comfortable grip makes quick work of a pound of carrots
- Instant-read thermometer to ensure your marinade reaches a proper boil
- Fine-mesh strainer if you prefer to serve the carrots completely drained
- Cast iron skillet as an alternative to the baking sheet for slightly different flavor development
Recipe Variations and Dietary Modifications
Gluten-Free Adaptation
- This recipe is naturally gluten-free as written – just double-check that your Worcestershire sauce is gluten-free (most major brands now are)
- Tamari can substitute for Worcestershire sauce if needed, using the same amount
Dairy-Free Modifications
- This recipe is already completely dairy-free, making it perfect for those with lactose intolerance or dairy allergies
- No modifications needed for dairy-free diets
Vegan Modifications
- Check your Worcestershire sauce label – some contain anchovies
- Substitute with vegan Worcestershire sauce or add an extra ¼ teaspoon of soy sauce plus a pinch of garlic powder
- All other ingredients are naturally vegan
Low-Carb/Keto Version
- Replace the ¼ cup granulated sugar with 2-3 tablespoons erythritol or 1-2 tablespoons stevia blend
- This reduces the carbs from about 15g to 3-4g per serving
- The marinade will be slightly less glossy but equally flavorful
Flavor Variations
- Mediterranean style: Add fresh herbs like thyme or oregano and substitute balsamic vinegar for white vinegar
- Spicy version: Include ¼ teaspoon cayenne pepper or 1 minced jalapeño in the marinade
- Asian-inspired: Replace Worcestershire with soy sauce and add 1 teaspoon fresh grated ginger
- Herb-forward: Stir in fresh dill, parsley, or chives just before serving
Nutritional Information and Health Benefits
Key Nutritional Highlights
Health Benefits of Main Ingredients
Dietary Considerations
Smart Swaps and Ingredient Substitutions
Common Substitutions:
- White vinegar → Apple cider vinegar or rice vinegar (same amount, slightly different flavor profile)
- Tomato sauce → Crushed tomatoes blended smooth or tomato paste thinned with water (use ⅓ cup paste + ⅓ cup water)
- Worcestershire sauce → Soy sauce plus dash of hot sauce (for umami depth)
- Granulated sugar → Honey or maple syrup (use 3 tablespoons, add to hot marinade to dissolve)
Budget-Friendly Swaps:
- Fresh carrots → Baby carrots (slice in half lengthwise, may need extra 2-3 minutes roasting time)
- Olive oil → Vegetable oil or canola oil (neutral flavor, same measurements)
- Fresh bell pepper → Frozen bell pepper strips (thaw and pat dry first)
Pantry Emergency Substitutions:
- Fresh onion → Onion powder (use 1 tablespoon) or dried minced onion (rehydrate in warm water first)
- Ground mustard → Dijon mustard (use 1 teaspoon) or yellow mustard (use ¾ teaspoon)
- Kosher salt → Table salt (use ¾ the amount called for)
Pro Tips for Substitutions:
- Store leftover tomato sauce in ice cube trays for future single-serving portions
- Raw apple cider vinegar adds beneficial probiotics and creates a more complex flavor
- When using honey or maple syrup, the marinade will be slightly thicker and more glossy

Make It Diabetes-Friendly
Sugar Substitutions:
- Replace the ¼ cup granulated sugar with 2 tablespoons erythritol or 1 tablespoon stevia blend
- Monk fruit sweetener works excellently – use 1-2 tablespoons depending on your preferred sweetness level
- These substitutions reduce the total carbs from 15g to approximately 8g per serving
Portion & Timing Tips:
- Stick to ¾ cup serving sizes to keep carbs around 6-8 grams per portion
- The high fiber content (4g per serving) helps slow sugar absorption
- Pair with grilled chicken or baked fish to add protein and further stabilize blood sugar
- The vinegar in the marinade may help improve insulin sensitivity when consumed with meals
Carb Reduction Strategy:
- Focus on the vegetables themselves rather than the marinade for the most nutrition
- Use a slotted spoon when serving to minimize marinade consumption
- Consider serving over cauliflower rice or zucchini noodles instead of regular grains
Total Carb Reduction: Using sugar substitutes reduces total recipe carbs by approximately 40%, making each serving more diabetes-friendly while maintaining the signature sweet-and-sour flavor profile.

Perfect Pairing Suggestions
Beverage Pairings
Side Dish Recommendations
Complete Meal Ideas
Occasion Suggestions
Pro Tips and Troubleshooting
Professional Techniques
Common Mistakes and Solutions
Storage and Make-Ahead Strategies
Scaling and Presentation

Copper Pennies (Marinated Carrots)
Ingredients
For the Roasted Carrots
- 1 pound raw carrots
- 2 tablespoons olive oil
- ½ teaspoon kosher salt
- ¼ teaspoon ground black pepper
- ½ green bell pepper, seeded and chopped
- ¼ cup finely minced onion
For the Marinade
- ½ cup tomato sauce
- ¼ cup olive oil
- ⅓ cup white vinegar
- ½ teaspoon Worcestershire sauce
- ½ teaspoon ground mustard
- ¼ cup granulated sugar
- ½ teaspoon kosher salt
- ¼ teaspoon ground black pepper
Instructions
Prepare the Carrots
- Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
- Peel the carrots using a vegetable peeler or the edge of a knife, then slice them into ¼ to ⅓-inch thick medallions. Consistent thickness ensures even roasting, so take your time with this step.
- Place the carrot medallions on your prepared baking sheet and drizzle with 2 tablespoons olive oil. Season with ½ teaspoon kosher salt and ¼ teaspoon black pepper, then toss everything together with your hands or tongs until every piece is evenly coated.
- Spread the carrots out in a single layer, making sure they’re not overlapping. Overcrowded carrots will steam instead of roast, and you want those beautiful caramelized edges.
Roast the Carrots
- Roast for 10-12 minutes for crisp-tender carrots that still have a slight bite. If you prefer your carrots more well-done, leave them in for an additional 2-3 minutes. Test for doneness by piercing with a fork – it should go through easily but with slight resistance.
- Remove the carrots from the oven and let them cool completely on the baking sheet. This cooling step is crucial because hot carrots will make your marinade watery.
Make the Marinade
- While the carrots are roasting, combine all marinade ingredients in a small saucepan: ½ cup tomato sauce, ¼ cup olive oil, ⅓ cup white vinegar, ½ teaspoon Worcestershire sauce, ½ teaspoon ground mustard, ¼ cup granulated sugar, ½ teaspoon kosher salt, and ¼ teaspoon black pepper.
- Bring the mixture to a rolling boil over medium heat, stirring occasionally to dissolve the sugar completely. The marinade should be glossy and slightly thickened after about 3-4 minutes of boiling.
- Remove the marinade from heat and let it cool to room temperature, about 15-20 minutes. Hot marinade will partially cook your vegetables and make them mushy.
Marinate and Serve
- In a large mixing bowl or storage container, combine the cooled roasted carrots, chopped green bell pepper, and minced onion. Pour the cooled marinade over everything and stir gently to coat all pieces evenly.
- Cover tightly and refrigerate for at least 8 hours or overnight. The flavors develop and intensify during this time, so don’t skip this crucial step.
- To serve, either drain the excess marinade or use a slotted spoon to transfer the vegetables to your serving dish. The carrots will keep their vibrant color and tangy-sweet flavor for up to 5 days in the refrigerator.
