Follow these detailed, step-by-step instructions to assemble the perfect Spinach and Tomato Breakfast Wrap. The key is to prepare the components separately before combining them, ensuring each element is cooked to perfection.

1. Prepare Your Vegetables (Mise en Place): Begin by preparing all your vegetables as this will make the cooking process smooth and efficient. Finely chop the yellow onion, mince the garlic cloves, and dice the Roma tomatoes. Set them aside in separate bowls. Wash the baby spinach thoroughly and pat it dry.
2. Sauté the Aromatics: Place a large non-stick skillet over medium heat and add 1 tablespoon of olive oil. Once the oil is shimmering, add the chopped onion. Sauté for 3-4 minutes until the onion becomes translucent and soft. Add the minced garlic and cook for another minute until fragrant, being careful not to burn it. This step builds the crucial flavor foundation for the wrap.
3. Wilt the Spinach: Add the 4 packed cups of fresh baby spinach to the skillet with the onions and garlic. It will look like a lot at first, but it will cook down significantly. Gently toss the spinach with tongs and cook for 2-3 minutes, just until it has wilted completely. Season the vegetable mixture with a pinch of salt and pepper. Transfer the cooked spinach and onion mixture to a separate bowl and set it aside. This prevents the spinach from overcooking and releasing too much water into the eggs later.
4. Prepare the Eggs: In a medium-sized mixing bowl, crack all 8 eggs. Add the ¼ cup of milk or cream, the remaining salt, and black pepper. Whisk vigorously until the mixture is pale yellow and slightly frothy. Whisking incorporates air, which is essential for achieving light and fluffy scrambled eggs.
5. Scramble the Eggs: Wipe the skillet clean or use a new one. Place it over medium-low heat and add the remaining 1 tablespoon of olive oil. Pour the whisked egg mixture into the skillet. Let the eggs sit for about 20-30 seconds until the edges just begin to set. Using a rubber spatula, gently push the eggs from the edges toward the center. Continue this slow pushing and folding motion. When the eggs are about halfway cooked but still quite moist, add the cooked spinach and onion mixture, the diced tomatoes, and half of the shredded cheddar cheese (½ cup) to the skillet.
6. Finish the Filling: Gently fold all the ingredients together. Continue to cook, stirring gently, for another 1-2 minutes until the eggs are just set but still soft and moist, and the cheese is melted. Be careful not to overcook the eggs, as they will continue to cook from residual heat. Remove the skillet from the heat immediately.
7. Warm the Tortillas: To make the tortillas pliable and easy to fold, warm them up. You can do this by heating them one at a time in a dry skillet for about 20-30 seconds per side, or by wrapping the stack of tortillas in a damp paper towel and microwaving for 30-45 seconds.
8. Assemble the Wraps: Lay one warm tortilla flat on a clean surface. Spoon approximately one-quarter of the egg, spinach, and tomato filling onto the center of the tortilla in a line, leaving a border of about 2-3 inches around the edges. Sprinkle a generous amount of the remaining shredded cheddar cheese over the filling.
9. Fold the Wrap: To fold the wrap like a burrito, first fold in the two sides (the left and right edges) over the filling. Then, take the bottom edge (the one closest to you) and pull it up and over the filling, tucking it in snugly. Roll the wrap forward until it’s completely sealed. The snug tuck is key to preventing the wrap from falling apart.
10. Toast for a Crispy Finish (Optional but Recommended): For the best texture, briefly toast the assembled wraps. Wipe your skillet clean and place it over medium heat. Place the wraps seam-side down in the dry skillet. Toast for 1-2 minutes per side, or until the exterior is golden brown and crispy. This step not only adds a delightful crunch but also helps seal the wrap shut.
11. Serve Immediately: Slice the wraps in half on a diagonal for a beautiful presentation and serve immediately while they are warm and the cheese is gooey.