"Easter lunch just got easier! ????..."
INGREDIENTS
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5 tbsp. unsalted butter, divided
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1 small yellow onion, chopped
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3 garlic cloves, chopped
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1 1/2 tbsp. all-purpose flour
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2 1/2 c. heavy cream
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4 tsp. kosher salt
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2 tsp. chopped fresh thyme, plus more for garnish
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1 1/2 tsp. black pepper, plus more for garnish
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1 1/2 c. sharp white Cheddar cheese, shredded
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1 1/2 c. Gruyere cheese, shredded
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4 lb. Russet potatoes (about 4 large potatoes), peeled
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Nonstick cooking spray