Caramelised onions and Brie Tacos

Name: Caramelised onions and Brie Tacos
Prep time: 5 min
Cook time: 30 min
Total time: 35 min
Cuisine: Mexican, Latin American, American
Ingredients: 8 small tortillas; 500 grams ground turkey; 160g brie cheese; 1 teaspoon salt; 1/2 teaspoon ground black pepper; 6 springs of fresh thyme; 8 large onions; 50 grams butter; fresh greens for serving; 2 tablespoons butter; 2 tablespoons flour; 200 ml whole milk; 150 grams shredded cheddar; 1/4 teaspoon salt; 1/4 teaspoon smoked paprika