Preheat your oven to 375°F (190°C).
In a large skillet over medium heat, add the lean ground beef. Cook until browned, about 5-7 minutes. Drain excess fat.
Sprinkle the taco seasoning over the cooked beef. Add the salsa and water, stirring to combine. Simmer for about 5 minutes until heated through.
Open the cans of refrigerated biscuits. Flatten each biscuit and press it into a muffin tin to form a cup.
Spoon the beef mixture into each biscuit cup, filling them about three-quarters full. Top with shredded cheddar cheese.
Bake for 12-15 minutes until the biscuits are golden brown and the cheese is melted.
Remove from the oven and cool slightly before serving. Garnish with additional salsa, sour cream, or avocado if desired.