Preheat the oven to 400F and line a large baking sheet.
In a skillet over medium heat, cook the ground beef, breaking it up, until no longer pink.
Add the taco seasoning, tomato paste, and bone broth. Stir well, lower the heat, and simmer for 8 minutes.
Lay the tortillas out on the lined baking sheet. Spread refried beans, taco beef, and shredded cheddar over one half of each tortilla.
Fold each tortilla over and press down firmly. If they want to pop open, set a wire rack on top to hold them closed.
Bake for 10 minutes, then broil for 1 to 2 minutes until crispy and golden.
Let cool slightly, then serve with salsa, Greek yogurt, lettuce, jalapenos, or your favorite toppings.