INGREDIENTS
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3 medium yellow onions, sliced (2 lbs)
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2 Tbsp butter
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1 Tbsp olive oil
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Salt and freshly ground pepper
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1 1/2 Tbsp butter
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1 1/2 Tbsp flour
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1/8 tsp garlic powder
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3/4 cup milk, or more to thin if needed
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5 oz. sharp cheddar cheese, shredded (1 1/4 cups)
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Salt and freshly ground black pepper
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1 Tbsp spicy brown mustard
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1 (19 oz) pkg Johnsonville Original or Beer N' Bratwurst Brats
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5 brat or hoagie buns