Tortellini Picnic Salad

Ingredients (11)

• + 2 (9 ounce) packages cheese tortellini add to pantry
• + 1 (8 ounce) package crumbled feta cheese add to pantry
• + 3 roma tomatoes, diced add to pantry
• + 1 (6 ounce) can black olives add to pantry
• + ½ cup chopped walnuts add to pantry
• + 1 bunch green onions, sliced add to pantry
• + 5 cloves garlic, chopped add to pantry
• ✓ 1 cup white vinegar
• ✓ ½ cup olive oil, or as needed
• + 1 teaspoon dried basil add to pantry
• + salt to taste add to pantry