How to Make ‘French Onion Chicken Bubble Up’ – A Cheesy, Savory Weeknight Wonder That’s Ready in 30 Minutes!

🌟 Why You’ll Love This Recipe

✅ Ready in under 30 minutes – Thanks to pre-made puff pastry & rotisserie chicken

✅ Packed with French onion flavor – Caramelized onions, garlic, wine, and Gruyère-style cheese

✅ Dramatic presentation – Golden, puffed-up crust that wows at the table

✅ Minimal cleanup – One skillet, one baking sheet

✅ Great for leftovers – Tastes even better the next day!

It’s not just dinner — it’s a showstopper on a weeknight budget.

🧀 French Onion Chicken Bubble Up

Serves 4 | Prep: 15 min | Cook: 15–20 min | Total: ~30 min

🛒 Ingredients

For the Filling:

1 tbsp butter + 1 tsp olive oil

1 large yellow onion, thinly sliced

1 tsp sugar (helps caramelization)

2 cloves garlic, minced

2 tbsp dry white wine (or low-sodium chicken broth)

2 cups cooked chicken, shredded or diced

Rotisserie chicken, grilled, or leftover baked breast/thigh

½ tsp dried thyme

Salt & black pepper to taste

¼ cup dry white wine or chicken broth (for deglazing)

For the Cheese Layer:

¾ cup shredded Swiss or Gruyère cheese

¼ cup grated Parmesan cheese

Optional: 1 tsp Worcestershire sauce (adds depth)

For the “Bubble Up” Crust:

1 sheet frozen puff pastry, thawed (~9×9 inch)

1 egg, beaten (for egg wash)

Optional: Fresh thyme or parsley for garnish

👩‍🍳 Step-by-Step Instructions