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1
Melt butter in a small saucepan over low heat. Add the garlic and cook, stirring, until fragrant, about 1 minute. Add hot sauce, Worcestershire sauce, and vinegar. Season with salt and pepper, whisk to combine and raise heat to medium. Bring to a simmer, whisk again and remove from heat.
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2
Heat olive oil in a medium skillet over medium heat until shimmering. Add onion, celery, and garlic and cook, stirring often, until tender and translucent, about 7 minutes. Transfer to a large bowl and let cool.
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3
Adjust oven rack to lower-middle position and preheat oven to 375u00b0F. Whisk eggs and chicken stock in a medium bowl. Sprinkle with gelatin and let stand for 5 minutes.
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4
Add chicken, Worcestershire sauce, celery seed, breadcrumbs, 1/2 teaspoon salt, 1/4 teaspoon black pepper and 1/4 cup of the prepared wing sauce to the bowl with the cooled onion mixture. Add egg mixture and combine using hands, taking care not to over-mix.
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5
Spray six compartments of a cupcake tin with cooking spray. Pack about 2 tablespoons of the meat lightly and evenly into each one, creating a well in the center. Fill the well with blue cheese and top with a slice of butter. Mound with remaining meat, pressing gently to create a cupcake shape and fuse the top and bottom halves. Brush with wing sauce. Transfer meatloaf to the oven and bake, brushing with more sauce every ten minutes, until an instant instant-read thermometer inserted into center of loaf reads 150u00b0F to 155u00b0F, about 25 minutes.
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6
Remove from oven and let rest for 10 minutes before serving. Pass additional wing sauce at the table.
