Copper Kettle Warm Appetizer (Printable Version)

An elegant appetizer with caramelized onions, pecans, dates, and warm flavors served in copper ramekins.

# What You'll Need:

→ Caramelized Onion Jam

01 - 2 large yellow onions, thinly sliced
02 - 2 tbsp unsalted butter
03 - 1 tbsp olive oil
04 - 1/2 tsp salt
05 - 2 tbsp brown sugar
06 - 2 tbsp balsamic vinegar
07 - 1/4 tsp black pepper

→ Nut & Fruit Mixture

08 - 3/4 cup pecan halves
09 - 1 cup Medjool dates, pitted and quartered
10 - 2 tbsp honey
11 - 1/2 tsp ground cinnamon
12 - 1/8 tsp cayenne pepper (optional)
13 - Pinch of flaky sea salt

→ For Assembly

14 - 6 small copper ramekins or similar oven-proof dishes
15 - Fresh thyme leaves, for garnish

# How-To Steps:

01 - Melt butter with olive oil in a large skillet over medium heat. Add sliced onions and salt, cooking while stirring frequently until soft and golden, about 15 to 20 minutes. Stir in brown sugar and balsamic vinegar, then continue cooking, stirring occasionally, until deeply caramelized for 8 to 10 minutes. Season with black pepper, remove from heat, and let cool slightly.
02 - Preheat oven to 350°F. Combine pecans, dates, honey, cinnamon, cayenne (if desired), and flaky sea salt in a bowl. Spread the mixture onto a lined baking sheet and toast in the oven for 8 to 10 minutes until fragrant. Allow to cool slightly.
03 - Spoon a generous layer of caramelized onion jam into each ramekin. Top with the warm pecan and date mixture, then garnish with fresh thyme leaves.
04 - Serve immediately, optionally accompanied by toasted baguette slices or crackers.

# Tips for Success:

01 -
  • It looks fancy enough to impress but comes together in under an hour with mostly pantry staples.
  • The warm, caramelized sweetness hits differently when served in actual copper—it keeps the filling at that perfect just-warm temperature.
  • You can prep the jam and nuts ahead, making last-minute assembly feel effortless.
02 -
  • Don't rush the onions; every extra minute of cooking deepens their flavor in a way you can't fake with caramel color or extra sugar.
  • The cayenne is invisible until you taste it—it doesn't make things spicy, just adds an intriguing warmth that keeps you reaching for another bite.
03 -
  • If you don't have copper ramekins, any small oven-proof dish works, but the copper really does make a difference in keeping things warm and looking intentional.
  • A tiny dollop of soft goat cheese between the onion layer and nut mixture adds an unexpected richness that makes people pause mid-bite and ask what that creamy element is.
Go Back