Meanwhile, in the now empty pot, melt the butter. Stir in the egg yolks, milk, and mustard to combine. Slowly add in the cheese. Return the pasta to the pan and toss to coat evenly.
Combine the garlic, salt, pepper, egg blend, sage, thyme cherry preserves, and maple syrup in a large bowl with the country sausage. Mix and roll into balls.
Preheat the oven to 350 degrees F. Combine 12 of the meatballs with the macaroni and cheese. Carefully crack and egg over each divot, filling each, then bake.