Preheat the oven to 400 degrees F. Whisk together milk, beef bouillon, eggs, ketchup, worcestershire sauce, dijon mustard, , seasonings, kosher salt, black pepper, and breadcrumbs in a large bow and mix until just combined. Add ground beef and mix together until fully combined. 1/4 cup Whole Milk1 tsp Beef Bouillon Paste2 large Eggs2 tbsp Ketchup2 tbsp Worcestershire Sauce1 tbsp Dijon Mustard1 tbsp Italian Seasoning1 pack Sazon1 tbsp Onion Powder1 tbsp Garlic Powder2 tsp Black Pepper2 tsp Kosher Salt1/2 cup Breadcrumbs2 lbs Ground Beef
Form the ground beef mixture into 4 oz hamburger patties. Prep the gravy ingredients by mixing together brown gravy mix and beef broth (or water) in a large cup or small bowl. Set aside. 1 pack Brown Gravy Mix1 cup Beef Broth
Warm a large oven safe pan (you can also us a dutch oven or large cast-iron skillet), over medium-high heat for about 3 minutes. Drizzle olive oil and place patties into the pan. Cook on both sides for 2-3 minutes, until just that patties develop a nice crust. (Pro tip: cook in batches to prevent overcrowding the pan) Repeat with all of the ground beef patties., then remove from the pan and place onto a plate. 1 tbsp Olive Oil
Add sliced onions and garlic and cook for 2-3 minutes, until fragrant, then add butter and stir until melted. Add the gravy mixture to the pan and scrape up any browned bits that collected on the bottom of the pan. Place the patties back into the pan, cover with a lid (or aluminum foil) and bake for 20 minutes. Remove the lid and continue to bake for 10-15 minutes, until the patties are cooked through and the gravy has thickened. 1 small Yellow Onion2 cloves Garlic1 tbsp Salted Butter