Embark on a culinary journey with these vibrant Vegetarian Tostadas, a truly satisfying and wholesome meat-free meal. Featuring a delightful medley of roasted tomatoes and onions, tender spaghetti squash, and hearty black beans, this dish promises a symphony of flavors and textures that will captivate your palate. Perfect for a busy weeknight or a relaxed weekend, these tostadas are not just delicious but also packed with nutrients, making them an excellent choice for anyone seeking a plant-forward option.
Looking for more inspiring meat-free recipes to add to your repertoire? Explore these delightful Mushroom Spinach Quesadillas or savor the comforting goodness of this Zucchini Parmesan. They’re perfect for expanding your vegetarian menu!

The Journey to Embracing Meat-Free Meals
When I first embarked on my married life, my husband possessed an almost insatiable appetite. He could easily out-eat nearly everyone I knew, a testament to his vibrant energy. While I had a foundational understanding of cooking and a genuine passion for it, my experience was largely limited to preparing meals for myself. The typical newlywed couple might focus on “cooking for two” recipes, but in our household, I was often preparing full-sized recipes just for the two of us to ensure he was sufficiently fueled.
Beyond his robust appetite, my husband also had a strong preference for meat-centric dishes. He was, as they say, a “meat and potatoes” kind of guy – though perhaps more accurately, “meat and anything else,” as he wasn’t a huge fan of potatoes themselves. Looking back, I genuinely believe that throughout our entire first year of marriage, I didn’t prepare a single meat-free meal. It was simply the norm to have a generous portion of protein at every dinner.
However, much has evolved since those early days of our marriage. Perhaps it’s the natural progression of age, or a shift in metabolism, but my husband’s appetite has gradually moderated. This change has been a welcome one, especially as I anticipate the future challenge of keeping two growing teenage boys well-fed! And where meat once held a prominent place on our dinner table every night, we now actively strive to incorporate meat-free meals into our weekly rotation, often once or twice. Occasionally, my husband might still inquire about the absence of meat, but more often than not, he hardly even notices anymore. It’s a true testament to how delicious and satisfying plant-based cooking can be.
Introducing Your New Favorite: Vegetarian Tostadas with Spaghetti Squash
These Vegetarian Tostadas recently graced our dinner table, and they have quickly earned a spot on my list of all-time favorites. My current culinary obsession is spaghetti squash, and this recipe offered such a unique and exciting way to feature it. By combining the delicate strands of spaghetti squash with beautifully roasted vegetables and savory black beans, I crafted a meal that I would happily enjoy on a regular basis. It’s truly a game-changer for anyone looking to incorporate more vegetables and plant-based proteins into their diet without sacrificing flavor or satisfaction.
One of the keys to the success of this dish lies in the perfectly prepared spaghetti squash. For this recipe, I opted for a microwave cooking method, and I must confess, it has become my new go-to. Historically, I’ve struggled to achieve that ideal texture when cooking spaghetti squash in the oven, often ending up with a mushy result. The microwave, however, delivers consistently perfect squash – tender yet with just enough firmness to maintain its delightful strand-like texture. While I highly recommend trying this microwave technique for its ease and fantastic results, feel free to prepare your spaghetti squash using your preferred method. But for me, this simple trick has revolutionized my spaghetti squash game!

Why Choose Vegetarian Tostadas?
Vegetarian Tostadas offer a fantastic array of benefits, making them an ideal addition to any meal plan. Firstly, they are incredibly versatile. You can easily adapt the fillings to suit your taste preferences or whatever fresh produce you have on hand. Beyond customization, they are often more economical than meat-based meals, helping you save on your grocery budget. Nutritionally, plant-based meals like these tostadas are typically rich in fiber, vitamins, and minerals, contributing to overall well-being. The combination of black beans and spaghetti squash provides complex carbohydrates and protein, ensuring a filling and sustained energy release. They are also a fantastic way to introduce more vegetables into your family’s diet, often in a format that even picky eaters will enjoy due to the fun, handheld nature of tostadas.
The Magic of Roasted Vegetables
Roasting vegetables like tomatoes and onions truly brings out their natural sweetness and deepens their flavors. The high heat of the oven caramelizes the sugars, creating a rich, savory profile that’s hard to beat. For these tostadas, roasting the tomatoes until slightly blistered and the onions until tender and sweet adds an incredible depth that elevates the entire dish. Don’t be afraid to experiment with other roasted vegetables too; bell peppers, zucchini, or even sweet potatoes would make excellent additions or substitutions.
Spaghetti Squash: A Healthy & Delicious Alternative
Spaghetti squash is a true marvel of the vegetable world. When cooked, its flesh naturally separates into spaghetti-like strands, offering a light and healthy alternative to traditional pasta or other starches. It’s low in calories and carbohydrates, yet surprisingly filling due to its fiber content. Its mild flavor makes it incredibly versatile, absorbing the spices and flavors of the dish it’s incorporated into. In these tostadas, it adds a unique texture and a wholesome foundation that pairs wonderfully with the robust black beans and roasted veggies.
Black Beans: Protein Powerhouse
Black beans are a cornerstone of many vegetarian and vegan diets, and for good reason. They are an excellent source of plant-based protein, dietary fiber, and essential minerals like iron and magnesium. In this recipe, mashing some of the black beans as they heat creates a creamy, flavorful base for the tostadas, while leaving some whole adds delightful texture. They provide the hearty, satisfying element that ensures these tostadas feel like a complete and fulfilling meal, even without meat.
More Tostada Recipes to Explore
If you’ve fallen in love with the concept of tostadas, there’s a whole world of possibilities to discover. Tostadas are incredibly versatile, serving as a crisp canvas for countless delicious toppings. Here are a few more tostada recipes to inspire your next meal:
- Shrimp Tostadas
- Beef Tostadas
- Slow Cooker Chicken Tostadas
- Easy Breakfast Tostadas

Vegetarian Tostadas
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Ingredients
- 3 tablespoons vegetable oil divided
- 2 1/2 teaspoons chili powder divided
- 1 teaspoon chipotle chili powder
- salt and pepper
- 1 pint cherry or grape tomatoes halved
- 1 large red onion cut into 1/2-inch wedges
- 1/2 spaghetti squash seeded
- 15 oz canned black beans, drained and rinsed
- 8 tostada shells
- 1/2 cup sour cream
- fresh cilantro
- lime wedges
Instructions
- Preheat the oven to 425F (220C). Line a baking sheet with foil for easy cleanup.
- In a medium bowl, whisk together 2 tablespoons of the vegetable oil, 2 teaspoons of the chili powder, and the chipotle chili powder. Season generously with salt and black pepper to taste. Add in the halved cherry or grape tomatoes and the red onion wedges, stirring well to ensure all vegetables are evenly coated. Arrange the seasoned vegetables on the prepared baking sheet in a single layer, ensuring they are not overcrowded. Roast in the preheated oven for approximately 25 minutes, stirring once halfway through, until the vegetables are tender and slightly caramelized.
- Meanwhile, prepare the spaghetti squash. Place the seeded half of the spaghetti squash, cut side up, into a microwave-safe dish. Pour about 1/2 cup of water into the dish, then cover it tightly with plastic wrap. Microwave on high until the squash is tender, typically 10-15 minutes, depending on your microwave’s power and the size of the squash. Once cooked, carefully remove from the microwave and let it sit for a few minutes until it’s cool enough to handle. Using a fork, gently scrape the cooked flesh into a bowl, creating beautiful spaghetti-like strands.
- In a skillet, heat the remaining 1 tablespoon of vegetable oil over medium heat. Add the drained and rinsed black beans to the hot skillet. Cook the beans for a few minutes until thoroughly heated through, using the back of a spoon or a potato masher to mash some of the beans as they warm. This will create a creamy, flavorful bean layer while still leaving some beans whole for texture.
- To assemble the tostadas, spread a generous layer of the mashed black beans onto each crispy tostada shell. Top with a portion of the tender spaghetti squash strands, followed by a spoonful of the roasted tomatoes and onions. Finish each tostada with a dollop of cool sour cream. Garnish with plenty of fresh cilantro and a squeeze of fresh lime juice just before serving for a burst of bright, fresh flavor. Serve immediately and enjoy!
Recipe Notes:
Nutrition information provided as an estimate only. Various brands and products can change the counts. Any nutritional information should be used as a general guide.
Nutrition Information
Serving: 2 tostadas
- Calories: 445 kcal (22% DV)
- Carbohydrates: 53 g (18% DV)
- Protein: 11 g (22% DV)
- Fat: 22 g (34% DV)
- Saturated Fat: 6 g (38% DV)
- Polyunsaturated Fat: 7 g
- Monounsaturated Fat: 6 g
- Trans Fat: 0 g
- Cholesterol: 25 mg (8% DV)
- Sodium: 808 mg (35% DV)
- Potassium: 838 mg (24% DV)
- Fiber: 13 g (54% DV)
- Sugar: 9 g (10% DV)
