Preheat oven to 425 degrees
Trim ends off of beets. (if there are greens on the beets, set aside- these are delicious sauteed). Scrub beets with vegetable brush. Place beets in oven proof casserole dish that has a lid. Place beets in dish, drizzle with olive oil and toss lightly to coat beets with oil.
Place lid on casserole dish and bake for 45-60 minutes or until a knife is easily inserted into the beet. Remove dish from oven, set aside to cool.
When beets are cool enough to handle, slip skins off beets . Cut beets into small 1" dice.
Place beets into medium sized bowl. Add cooked quinoa, salt, pepper, cayenne, 1/2 of chopped toasted pistachio nuts, (save remainder for garnishing top) and parsley leaves and minced red onion Stir to combine. Reserve tomato sliced for serving
Place cleaned and dry basil leaves, parsley, olive oil, lemon juice, red wine vinegar, garlic, mustard and salt into blender . Cover blender and process until ingredients are chopped .
Pour basil dressing over beet and quinoa mixture, stir thoroughly to combine. Taste and add additional seasonings as needed.
Garnish salad with remaining toasted pistachios and fresh sliced ripe tomato.