This vegan cheesy cauliflower taco casserole is loaded with flavor for your new favorite weeknight meal ready in 30 minutes! You'll love the cheesy flavor while the taco spices burst with flavor elevating cauliflower in a whole new way!
Place an oven rack in the upper third of your oven. Turn on broiler.
In a large cast iron or oven safe skillet, add oil and heat over medium. Add in onions and bell peppers and saute for 4-5 minutes or until softened, stirring often. Add garlic and stir together, cook for an additional minute. *If you don't have an oven safe skillet, cook in a normal skillet and you will transfer to an oven safe dish later.
Add in crumbles and cauliflower and stir occasionally until crumbles and soft about 4-5 minutes.
Add in tomatoes and seasonings: chili powder, cumin, oregano, salt and smoked paprika. Stir to combine and bring to a simmer. Keep cooking for another 3 - 5 minutes until the cauliflower is tender and ready. Liquid should also be slightly reduced. *Each brand of crumbles are different, if you find the mixture seems dry, add 2-4 tablespoon (or more) stock/water while cooking.
Remove the pan from heat and add the vegan cheese on top with jalapeños if adding. *If transferring to a casserole dish, transfer here and top with the cheese. Since your pan is not hot, it may take longer to melt until broiler.
Broil until the cheese is melted and browned in spots, 2 to 3 minutes. Watch carefully so not to burn.