Peruvian vegetable spread

Ingredients

• 1 medium eggplant , halved lengthwise
• 1 red onion , quartered
• 1 red bell pepper , halved and cored
• 2 tbsp olive oil , divided
• 2 garlic cloves , smashed
• 1 tsp mustard seeds
• 1/2 tsp smoked paprika
• 1/4 tsp turmeric
• 1/8 tsp hot-red-chili-flakes
• 3/4 tsp salt
• 1 1/2 tsp white-wine vinegar