Add the ground beef to a large skillet. Cook over medium heat, breaking it apart and turning often as it cooks, until browned. Season lightly with salt and pepper and continue to cook until cooked through. Stir in the taco seasoning. Remove from heat. (Optionally, you can drain off some of the rendered fat.)
Prep the Zucchini
Preheat your oven to 375°F (190°C).
Cut the zucchini in half from top to bottom. Use a spoon to scrape out the seedy middy and form into a boat shape.
Place the zucchini on a baking sheet. Drizzle with olive oil and season lightly with salt and pepper. Bake for about 8 minutes, or until softened slightly.
Fill each zucchini with ground beef and top with cheese. Return to the oven for a few more minutes, until the cheese has melted.
Assemble and Serve
Top with diced red onion, cilantro and sour cream, or any of your favorite toppings, and serve with slices of lime.
Notes
Meal prep: To save time, prep the zucchini boats and cook the filling ahead of time. Store them separately in airtight containers in the fridge, then assemble and bake when you’re ready for a quick and delicious dinner.Storing leftovers: It is best to store these un-assembled, with the zucchini, beef and toppings stored in separate containers. The zucchini can get mushy, so be sure to eat them within a couple of days for the best flavor and freshness. Freezing: Freezing zucchini boats is possible, but the texture may change after thawing due to the high water content of zucchini. If you choose to freeze them, it’s best to undercook the zucchini slightly before freezing. Thaw in the fridge and bake them again when ready to serve to retain as much texture as possible.