Start by charring the eggplant on a grill or roasting in the oven. Cook until soft and collapsing, which releases a sweet, smoky flavor. Once done, let it cool slightly.
In a sauté pan, heat olive oil and toast breadcrumbs with garlic, cumin, chili flakes, salt, and pepper. Stir frequently until golden and crisp for a perfect crunchy topping.
Combine roasted eggplant, soaked walnuts, shallots, lemon juice, miso, and garlic in a blender. Blend until smooth and creamy. Taste and adjust seasoning as needed.
Boil pasta until al dente. Reserve a bit of pasta water, then toss pasta with the creamy eggplant-walnut sauce. Add water as needed to reach desired consistency.
Plate the pasta and generously sprinkle with your spiced breadcrumbs and extra fresh dill for a visually appealing finish.