Begin by sautéing the green pepper and onion in 1- 2 tbsp. of olive oil over medium-high heat until soft. Note: This is not in the original recipe, but sautéing them adds more flavor. Let the vegetables cool for a few minutes.
In a bowl mix crushed crackers, milk, eggs, salt, and garlic powder.
In another bowl, add the pepper-and-onion mix to the beef.
Now add the grated cheese and the cracker mixture to the beef.
Gently combine all the ingredients. Don't mix too hard.
Shape the meat mixture into a loaf in an ungreased 7 x 11 or 13 x 9 inch pan.
Bake the meatloaf, uncovered, at 350 degrees for 50 minutes.
While the meatloaf is baking, mix the ketchup, Dijon, and brown sugar.
After the meatloaf has baked for 50 minutes, spoon the sauce on top of the meatloaf.
Continue baking for another 10-15 minutes until the center of the meatloaf is 160 degrees.
Remove from the oven and drain extra grease.
It's ready to serve!