Preheat oven to 350 F.
In a large skillet, add bacon fat (or other fat of choice), onions, garlic, and broccoli and cook on medium until veggies are softened (10-15 minutes). Let cool a bit after cooking.
In a small bowl, break up bread in small pieces. Pour milk over bread until just to the top of the bread. Let soak while mixing other ingredients.
Meanwhile, while bread is soaking and veggies are cooking, crack eggs into large mixing bowl and beat with a fork or whisk.
Add ground beef, pork, oregano, mustard, Worcestershire sauce, salt, and pepper and mix well with your hands to incorporate.
Add soaked bread to meat mixture and blend in with hands.
Add warm veggies to meat mixture and incorporate thoroughly.
In a large ungreased 13 x 9 casserole dish, place the meat mixture and form into a long loaf, taking care to form it evenly in height along its length (for even cooking).
Position bacon strips across meatloaf cross-wise and tuck under to secure.
Place casserole dish in the oven and cook for 1-½ hours or until meat thermometer registers 160 F in several middle spots of the loaf. Let sit for 10 minutes before slicing. Serve with BBQ sauce.