2 1/4 lb flank steak, trimmed
6 bell peppers, thinly sliced
3 onions, thinly sliced
12 corn or multigrain tortillas

1/2 cup orange juice
1/2 cup lime juice
3 tbsp olive oil
2 garlic cloves, minced
2 serrano chilies, chopped
1 tsp ground cumin
1 large splash of your favorite tequila

Tyler's tip: Make your own guacamole and spread it on the tortilla before you fill it. It'll help hold everything together and keep your meal nice and moist.

Ultimate Guacamole
5 ripe avocados
2 tbsp lime juice
1 small onion, chopped
1 garlic clove, minced
1 serrano chili, thinly sliced
1 big handful fresh cilantro leaves, finely chopped
Kosher salt and freshly ground black pepper

To make: [1] Halve and pit the avocados. [2] With a tablespoon, scoop out the flesh into a mixing bowl. [3] Mash the avocados with a fork, leaving them a bit chunky. [4] Add the rest of the ingredients; fold everything together. [5] Lay a piece of plastic wrap directly on the surface of the guacamole so it doesn't brown; refrigerate for at least 1 hour before serving.

TO MAKE THE FAJITA: [1] In a small bowl, whisk together marinade ingredients. Add beef to marinade, cover, and chill 1 to 2 hours. [2] Drain marinade from meat. [3] Grill steak in a ridged grill pan over medium-high heat; cook for 4 minutes on each side. Transfer to a cutting board; let stand. [4] In the same pan with steak juices, add peppers and onions; grill 3 minutes or until tender. [5] Meanwhile, warm tortillas in a dry skillet. [6] Thinly slice steak against the grain on a diagonal. [7] To serve, fill each tortilla with a few slices of steak, peppers, and onions, and top as desired. Makes 6 servings.

Per serving (as shown): 700 calories, 53 g protein, 45 g carbs, 16 g fiber, 39 g fat

[A] The avocados in guacamole contain lutein, a plant compound that keeps skin healthy by heading off cell damage caused by sunlight and pollution.

[B] Sweet and hot peppers are good sources of beta-carotene and vitamin C, two of the seven nutrients government studies show that most men don't get enough of.

[C] Stick with beef instead of chicken to fill your tortilla shells. Flank steak, one of 29 lean cuts of beef, serves up less artery-clogging saturated fat than the average piece of poultry.

[D] Whether they're fresh from the vine or chopped into salsa, tomatoes are packed with potassium, an energy-producing nutrient that also fights off elevated blood pressure.

[E] Top your fajita with a bit of cheese, but pile even more on hers. Besides keeping bones strong, eating plenty of calcium makes a woman less likely to develop PMS-and that's something everyone can benefit from.