Step 1: Cook the Beefy Filling
Heat your largest skillet over medium-high heat. Add ground beef and break it up, cooking until browned. Drain excess grease. Stir in taco seasoning mix and water. Bring to a simmer, reduce heat to low, and cook for 5-7 minutes, stirring occasionally, until most liquid is absorbed. Remove from heat.
Step 2: Get Ready to Assemble
Lay one large flour tortilla flat. Sprinkle about ¼ cup of the cheddar and Monterey Jack cheese blend evenly over just one half of the tortilla, going right to the edge.
Step 3: Load Up the Inside
On the opposite half of the tortilla (without cheese), spoon about ¼ of the seasoned ground beef filling. Top the beef with about 2 tablespoons of salsa, chopped onion, and fresh cilantro. Add pickled jalapeños now if using.
Step 4: Fold and Roll!
Fold in the two short sides of the tortilla. Starting from the bottom (filling side), tightly roll the tortilla upwards, ensuring the cheese-sprinkled side ends up on the outside. Repeat with remaining tortillas and filling.
Step 5: Get That Grilled Cheese On!
Heat 1 tablespoon of olive oil in the same large non-stick skillet (or a griddle) over medium heat. Place 1 or 2 burritos seam-side down, then quickly flip so the cheese side is down onto the skillet. Cook for about 3-5 minutes until the cheese is melted, golden brown, and crispy.
Step 6: Finish the Cook
Using a spatula, flip the burritos. Cook the other side for another 3-5 minutes until golden brown and heated through.
Step 7: Serve and Enjoy!
Remove from skillet. Slice in half diagonally if desired. Serve immediately while warm and crispy. Garnish with optional sour cream, guacamole, or extra salsa.