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1. In a skillet, caramelize onions and garlic in half of the butter over medium heat for 15-20 mins. Set aside.
3. Gradually whisk in milk, cooking until thickened for 3-4 mins.
4. Stir in shredded Gruyere until the sauce is smooth. Add cream, salt, and pepper, stirring to combine.
6. Ensure everything is evenly distributed, then top with the reserved bacon.
Optional: Turn on the oven’s broiler and place the skillet under it for a few minutes until the top is golden and bubbly. Carefully remove from the oven, cool briefly, and serve your delicious French Onion Skillet Mac & Cheese!
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