Source: The Cookbook Chronicles
2 tbsp olive oil
1 onion, finely chopped
4 cloves garlic, finely minced
1 lb. lean ground beef
1/2 tsp smoked paprika (sweet or hot, your choice)
1 tsp garlic salt
1/4 tsp black pepper
pinch red pepper flakes (optional)
1 tsp chopped thyme
2 large eggs
3 tbsp sweet mustard
2 tbsp balsamic vinegar
2 tbsp Worcestershire sauce
1/3 cup seasoned bread crumbs
1 ½ cups shredded sharp cheddar cheese, divided
Preheat the oven to 400 degrees.
In a skillet, heat the olive oil on medium-high heat. Add the onions and garlic, and cook until the onions become caramelized, about 7-8 minutes. Add the ground beef, paprika, garlic salt, red pepper flakes (if using) and chopped thyme. Cook the beef until thoroughly browned and cooked through, about 5 minutes. Remove from heat and set the beef and onion mixture in a large mixing bowl.
With a spoon, gently mix in the eggs, mustard, balsamic vinegar, Worcestershire sauce, seasoned bread crumbs, and 1/2 cup of shredded cheese. Spoon the mixture into the pie crust, and top with the remaining cup of cheese.
Place the pie on a baking sheet to catch drips. Bake for 40 minutes, until the crust is golden, and the cheese is browned. Serve hot.