Experimenting with Meatloaf: Bison Edition

This title just sounds gross to me. haha.  I want to keep track of recipes because I almost always personalize them (ADD MORE VEGGIES!) and forget what I did, so I may share from time to time. 

Bison Meatloaf

Meat mixture:
1lb lean ground bision
1 egg
1 small onion, diced
1/2 bell pepper, chopped
1 carrot, grated
2 Tbsp fresh chopped parsley
1 small can tomato paste
2 large mushrooms, chopped
2 pieces of bread chopped into little cubes
salt and pepper
splash of milk

Topping:
1 small can tomato paste
1/4 cup brown sugar (didn't measure, just a guess)
3 Tbsp apple cider vinegar, or more to taste
2 Tbsp stoneground mustard
salt and pepper
a shake of garlic powder

Put all the meat mixture ingredients in a bowl and mix really well.  Add the milk last (I didn't need much).  Put the meat mixture in a bread loaf pan.
In a seperate bowl mix together the topping ingredients.  Spread on top of the uncooked meatloaf.  Bake at 350 degrees for 1 hour.

The flavor was wonderful!  I love all the chuncks of veggies in it.  The topping was delicious, a tad too sweet, but it was good!  I will definitely make this again!