Bakery | Boulangerie | ACE Bakery | ACE Café and Bread Store

French Onion Soup Bites

Rich, savory, and perfect for an elegant appetizer.

These Caramelized Onion & Gruyère Baguette Bites turn simple ingredients into a show-stopping starter. ACE® White Baguette is sliced into rustic cups, ready to cradle a luscious filling of golden, buttery onions infused with dry mustard and a splash of white wine for depth. Each piece is crowned with nutty Gruyère, then baked until bubbling and irresistibly crisp. Finished with a sprinkle of fresh chives, it’s a bite that feels both rustic and refined — ideal for cocktail parties, holiday spreads, or anytime you want a warm, indulgent nibble that impresses.

Prep Time: 10 minutes
Cook Time: 15 minutes
Total Time: 25 minutes
Serves: 6-8

Pro Tip: These bites can be fully assembled ahead and frozen until ready to bake – perfect for drop-in guests or easy party planning.

INGREDIENTS

  • 1 ACE Bakery® White Baguette
  • 1/4 cup butter
  • 4 large cooking onions, thinly sliced
  • 1/2 tsp. each salt and fresh cracked pepper
  • 1 tsp. dry mustard powder
  • 1/4 cup dry white wine, or sherry or water
  • 1 cup grated Gruyere cheese
  • 2 tbsp. fresh chopped chives

INSTRUCTIONS

  1. Preheat oven to 400F (200C).
  2. Cut ACE® White Baguette into 1-inch pieces (about 18 pieces); arrange on a large rimmed baking sheet in a single layer with cut side facing up. Press the centre of each piece down with your thumb to make a small “cup” Set aside.
  3. In a large saucepan, melt butter over medium-high heat, add onions, salt, pepper and mustard powder; stirring often until onions are golden and tender, about 10 minutes. Stir in wine (or whatever liquid you are using) and reduce heat, cover and simmer for about 5 minutes.
  4. Divide warm onion mixture over the baguette pieces and top each with the shredded Gruyere.
  5. Bake in the oven until the cheese is melted and is golden and bubbling, about 10-12 minutes.
  6. Sprinkle with chives and serve warm.