Beef Slice with Sweet Fruit and Potato

This recipe spawned by accident due to lack of sleep, existing ingredients in my kitchen, and time constraint...surprisingly this restrictive combination makes for an exceptionally moist and delicious beef slice (serves 5):
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1.5 lbs lean ground beef
2 potatoes-pealed, boiled, and riced (or smashed with a fork)
2 eggs
3/4 cup onion-small dice
3/4 cup tomato-small dice
3/4 cup dried black currants (feel free to use dried apricots-chopped small, raisins, or dried cranberries)
3/4 cup Granny Smith apple-small dice
1/4 cup whole wheat bread crumbs
2 T salt
1.5 T pepper
chili powder-to taste
1/4 lb Havarti cheese (feel free to use substitute-feta, parm, or cheddar)
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1. With the exception of cheese, combine all ingredients and mix well.
2. Season well.
3. Make a test batch (by cooking a tiny patty in a pan to make sure the beef is seasoned properly). Taste and adjust if needed.
4. Shape the beef into two logs and make an indentation, lengthwise. Place cheese into the indentation and enclose it, reshaping the logs (ending up with the cheese in the middle of the log).
5. Place logs into a baking sheet and bake at 375F for ~35-45 minutes, or until meat is cooked through.
OPTIONAL: Serve over watercress or frisee salad; make half of the mixture into hamburgers and top with cheese.