. In a large mixing bowl, whisk the eggs.
Add in tomatoes, peppers, and beets. Stir until evenly distributed.
Heat butter in an 8-inch skillet over medium heat.
Turn on broiler.
Pour egg mixture into skillet and let stand just until the eggs begin to set on the bottom of the pan. Sprinkle on chives, salt and pepper.
Remove from heat and place under broiler. Cook for about 3-4 minutes or until eggs are cooked through. Watch carefully to avoid burning.
Remove from oven. Transfer frittata to a plate or cutting board, slice, and serve!