Step 1: Prepare the Vegetables
Wash, peel, seed, and chop all vegetables before beginning. Having everything prepared in advance makes cooking much easier.
Line a medium bowl with paper towels and set aside.
Step 2: Cook the Eggplant
Heat 4 tablespoons of olive oil in a large Dutch oven over medium-high heat.
Arrange the eggplant in an even layer and cook without stirring for 3–5 minutes until golden brown.
Stir, cover, reduce the heat to medium, and continue cooking for another 3–5 minutes until tender.
Transfer the eggplant to the prepared bowl using a slotted spoon.
Step 3: Cook the Zucchini
Add 1 tablespoon of olive oil to the same pot.
Add the zucchini and cook undisturbed for about 4 minutes until nicely browned.
Stir and cook another 1–2 minutes until tender.
Transfer to the bowl with the eggplant.
Step 4: Cook the Aromatics
Add the remaining tablespoon of olive oil.
Cook the onion with ¼ teaspoon kosher salt until softened and lightly caramelized, about 3–5 minutes.
Add the bell peppers, ½ teaspoon salt, and black pepper.
Cover and cook for another 3–5 minutes until the peppers soften.
Step 5: Build the Sauce
Add the garlic, rosemary, and thyme.
Cook for about 30 seconds until fragrant.
Stir in the cherry tomatoes and non-alcoholic white grape juice.
Cover and simmer for 5–7 minutes.
Remove the lid and continue cooking another 5–10 minutes until the tomatoes break down into a thick, jam-like consistency.
Step 6: Finish the Pisto
Reduce the heat to low.
Return the cooked eggplant and zucchini to the pot.
Stir gently until everything is heated through.
Mix in the sherry vinegar and 3 tablespoons of chopped parsley.
Taste and adjust the seasoning with additional salt and black pepper if needed.
Step 7: Serve
Transfer the Pisto Manchego to a serving platter.
Sprinkle with the remaining parsley and top with shaved Manchego cheese.
Serve warm with crusty bread, grilled meats, fried eggs, or roasted potatoes.