Avocado dressing: Scoop out the avocado flesh and place it in a blender or food processor.
Add the yogurt, lemon juice, olive oil, chopped garlic, salt, Italian seasoning, and dill weed to the blender or food processor.
Blend until smooth and creamy, scraping down the sides of the blender or food processor as needed to ensure everything is well incorporated.
If the dressing is too thick, thin it with a little cool water, adding a teaspoon until you reach your desired consistency.
Once the dressing is ready, transfer it to a small bowl or container with a tight-fitting lid.
Assemble the salad: Combine the 3/4 cup of cooked quinoa, a handful of chopped fresh spinach, 1/4 cup cherry tomatoes, and slices of hardboiled egg in a mixing bowl.
Drizzle the avocado dressing over the salad and toss to combine, ensuring everything is well coated.
Serve immediately and enjoy!