Cook Ground Beef: Brown ground beef in a skillet over medium heat. Drain excess fat, add taco seasoning and 1/4 cup water, and let simmer for 2–3 minutes.
Add Salsa: Stir salsa into the beef mixture and let cool slightly.
Mix Cheesy Filling: Combine softened cream cheese, shredded cheddar, and the beef mixture in a bowl. Mix until smooth.
Assemble Tacos: Lay tortillas flat, spoon 2–3 tablespoons of filling onto one side, and fold into half-moon shapes.
Brush with Butter: Brush tops with melted butter to ensure crispiness.
Bake: Arrange tacos on a baking sheet and bake at 375°F (190°C) for 12–15 minutes until golden and crispy.
Top and Serve: Add your favorite toppings like sour cream, salsa, or green onions and serve warm.