Every Thanksgiving table deserves a memorable appetizer, and this Thanksgiving Caramelized Onion Crostini fits the bill perfectly. I still remember the first time I made them—the kitchen filled with the sweet aroma of onions slowly caramelizing, and when paired with creamy cheese and crisp bread, they became the star of the evening. These elegant little bites balance sweet, savory, and crunchy all in one, making them the perfect starter for your holiday feast.
Ingredients
1 baguette, sliced into 1/2-inch pieces
2 tbsp olive oil
2 large onions, thinly sliced
1 tbsp butter
1 tsp balsamic vinegar
1 tsp sugar (optional, for faster caramelization)
Salt and pepper, to taste
8 oz goat cheese or cream cheese
Fresh thyme or rosemary, for garnish
Instructions
Preheat oven to 375°F (190°C). Place baguette slices on a baking sheet, brush with olive oil, and bake 8–10 minutes until crisp. Meanwhile, heat butter and remaining olive oil in a skillet over medium-low heat. Add onions and cook slowly, stirring occasionally, for 25–30 minutes until golden and caramelized. Stir in balsamic vinegar, sugar, salt, and pepper. Spread goat cheese or cream cheese on toasted baguette slices. Top with caramelized onions and garnish with thyme or rosemary. Serve warm or at room temperature.
Substitutions
Swap goat cheese with brie or blue cheese for a bolder flavor. Use fig jam as a base instead of cheese for a sweeter bite. Replace baguette with sourdough slices or crackers for variety. Add a sprinkle of toasted nuts for extra crunch.
Equipment
Baking sheet
Skillet
Wooden spoon
Knife and cutting board
Serving platter
Storage
Refrigerator: Store leftover caramelized onions up to 3 days in an airtight container.
Freezer: Freeze caramelized onions for up to 1 month; thaw before using.
Make ahead: Toast bread and prepare onions in advance, then assemble just before serving.
Top Tips
Cook onions low and slow for the best caramelization. Don’t overcrowd the pan—this ensures even browning. Spread cheese while bread is still warm so it melts slightly. Garnish with fresh herbs to add a festive Thanksgiving touch.
FAQs
Can I make these ahead of time? Yes, prepare onions in advance and assemble just before serving.
What’s the best cheese for crostini? Goat cheese, cream cheese, or brie work wonderfully.
Can I caramelize onions faster? Adding a pinch of sugar speeds up the process, though slow cooking gives the best flavor.
What can I serve with crostini? They pair well with wine, charcuterie boards, or as a starter before Thanksgiving dinner.