Heat olive oil in a large, heavy skillet over medium-high heat. Add onions and mushrooms. Sprinkle with salt. Cook and stir until mushrooms release all of their liquid and start to brown, about 10 minutes. Stir in bell peppers and jalapeno pepper. Cook and stir until peppers begin to soften up, about 5 minutes. Season with cumin, paprika, turmeric, black pepper, and cayenne. Stir and cook to "wake up" the flavors, about 1 minute. Pour in crushed tomatoes and water. Adjust heat to medium and simmer uncovered until veggies are softened and sweet, stirring occasionally, 15 to 20 minutes. Add more water if sauce becomes too thick.