01 -
Slice chicken breasts into 2-3 thinner pieces and pound between plastic wrap until 6 mm thick. Season with salt and pepper. Dredge each piece in a mixture of flour and Parmesan cheese.
02 -
Heat olive oil in a skillet over medium heat. Sear chicken slices in batches until golden brown on both sides, approximately 3 minutes per side. Remove and set aside.
03 -
In the same skillet, melt butter and use a silicone spatula to scrape up browned bits. Add sliced onions and cook over medium heat for 5 minutes, stirring frequently. Add soy sauce and seasoning, reduce heat to low, cover, and cook for 30 minutes, stirring occasionally. Remove cover, increase heat to medium, and cook for an additional 10 minutes.
04 -
Add white wine and garlic to the onions. Cook uncovered until wine nearly evaporates, about 10 minutes. Sprinkle flour over onions, toss to coat, and cook for 1-2 minutes to remove raw flour taste.
05 -
Pour in chicken broth, beef broth, and crumble the beef bouillon cube. Bring to a gentle boil, then reduce heat and simmer until sauce thickens, about 3-5 minutes. Remove from heat.
06 -
Return seared chicken along with any accumulated juices to the skillet. Evenly top with shredded Gruyère cheese. Place skillet in a preheated oven at 245°C and bake for 15-20 minutes until cheese is browned and bubbling.
07 -
Remove from oven, garnish with fresh thyme sprigs, and serve immediately, ideally with mashed potatoes and green beans.