Cauliflower Black Bean Tostadas with Queso and Pickled Onion Recipe
Introduction
These Cauliflower Black Bean Tostadas are a vibrant, flavorful dish perfect for a quick dinner or casual gathering. Roasted cauliflower coated in taco seasoning pairs beautifully with creamy black beans, tangy pickled onions, fresh cilantro, and melted queso on crispy corn tortillas.

Ingredients
- 1 large head of cauliflower, cut into florets
- Salt and olive oil
- 1 package taco seasoning (Siete brand recommended)
- 1 (14-ounce) can refried black beans (Amy’s brand recommended)
- 8–10 small corn tortillas (Mission street tacos tortillas recommended)
- 1/4 cup vegetable or canola oil
- Cilantro, for garnish
- Pickled red onion, for topping
- Queso (Queso Mama brand, green chile variety recommended)
- Salt and lime juice, to taste
Instructions
- Step 1: Preheat the oven to 425°F (220°C). Arrange the cauliflower florets on a baking sheet, drizzle with olive oil, and sprinkle with salt. Roast for 25-30 minutes until browned and tender.
- Step 2: Remove the cauliflower from the oven and sprinkle the taco seasoning over it. Toss with tongs to coat evenly, then return to the oven for an additional 5-10 minutes to deepen the flavors and ensure the cauliflower is soft and roasted.
- Step 3: Meanwhile, heat 1/4 cup of oil in a large skillet over medium-high heat. Test the heat by dropping a small amount of water into the oil—it should sizzle immediately.
- Step 4: Fry the tortillas in batches, cooking a few minutes on each side until golden brown and crispy. Drain on paper towels to remove excess oil.
- Step 5: Warm the black beans and queso separately until heated through.
- Step 6: Assemble the tostadas by spreading black beans on each crispy tortilla, topping with roasted cauliflower, a sprinkle of cilantro, pickled red onion, and a drizzle of warm queso.
- Step 7: Finish with a pinch of salt and a squeeze of lime juice to brighten the flavors. Serve immediately and enjoy!
Tips & Variations
- For an extra layer of flavor, add a dash of smoked paprika or chipotle powder to the taco seasoning before tossing with the cauliflower.
- Use baked tortillas instead of frying for a lighter version; just brush tortillas with oil and bake until crisp.
- Swap black beans for pinto or refried white beans if preferred.
- Add sliced avocado or a dollop of sour cream for creaminess.
Storage
Store leftover roasted cauliflower and black beans separately in airtight containers in the refrigerator for up to 3 days. Reheat gently on the stove or in the microwave. Tortillas are best enjoyed fresh but can be kept in an airtight container for a day; re-crisp in a hot skillet before assembling.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make this recipe vegan?
Yes, use a vegan queso or omit the cheese entirely. The dish will still be flavorful and satisfying with the roasted cauliflower and beans.
How can I pickle red onions quickly at home?
Slice red onions thinly and soak them in a mixture of equal parts vinegar and water with a pinch of salt and sugar for at least 30 minutes. They’re ready to use and add a bright tangy crunch to the tostadas.
PrintCauliflower Black Bean Tostadas with Queso and Pickled Onion Recipe
Crispy corn tostadas topped with flavorful roasted cauliflower seasoned with taco spices, creamy refried black beans, tangy pickled red onions, fresh cilantro, and warm, melty queso. This vibrant vegetarian dish offers a delightful combination of textures and bold Mexican-inspired flavors, perfect for a satisfying and easy meal.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 8–10 tostadas 1x
- Category: Main Course
- Method: Roasting and Frying
- Cuisine: Mexican
- Diet: Vegetarian
Ingredients
Cauliflower:
- 1 large head of cauliflower, cut into florets
- Salt, to taste
- Olive oil, for roasting
- 1 package taco seasoning (Siete brand recommended)
Tostadas:
- 1 (14-ounce) can refried black beans (Amy’s brand recommended)
- 8–10 small corn tortillas (Mission street tacos tortillas recommended)
- 1/4 cup vegetable or canola oil
- Fresh cilantro, for garnish
- Pickled red onion, for topping
- Queso (Queso Mama brand green chile variety recommended), warmed
Instructions
- Roast the cauliflower: Preheat your oven to 425°F. Spread cauliflower florets on a baking sheet, drizzle with olive oil, and sprinkle with salt. Roast for 25-30 minutes until the florets are browned and tender.
- Season the cauliflower: Remove the baking sheet from the oven. Sprinkle taco seasoning over the cauliflower and toss well with tongs until the florets are fully coated. Return the pan to the oven and roast for an additional 5-10 minutes until soft and richly roasted.
- Fry the tortillas: Heat 1/4 cup of vegetable or canola oil in a large skillet over medium-high heat. Once hot (test by dropping a speck of water to see it sizzle), fry the corn tortillas a few at a time. Cook each side for a few minutes until golden brown and crispy. Transfer fried tortillas to a paper towel-lined plate to drain excess oil. Repeat with remaining tortillas.
- Prepare toppings and assemble: Warm the refried black beans and queso. To assemble, top each crispy tortilla with a spoonful of black beans, a generous portion of roasted cauliflower, a sprinkle of chopped cilantro, pickled red onion, and a drizzle of warm queso. Season with salt and a squeeze of lime juice if desired for an added fresh tang.
- Serve and enjoy: Serve your cauliflower black bean tostadas immediately while the tortillas are crisp and toppings are warm. Enjoy the wonderful balance of crunchy, creamy, and tangy flavors.
Notes
- For the taco seasoning, you can adjust the amount based on your spice preference.
- If you prefer a healthier option, bake the tortillas rather than frying them; brush lightly with oil and bake at 400°F until crisp.
- Pickled red onions can be made ahead and stored in the refrigerator for a tangy topping throughout the week.
- Use gluten-free corn tortillas if you require a gluten-free dish.
- To make this dish vegan, substitute queso with a vegan cheese or cashew-based cheese sauce.
Keywords: Cauliflower tostadas, black bean tostadas, vegetarian Mexican recipe, roasted cauliflower, crispy tortillas, queso tostadas, pickled red onion

