Preheat oven to 350 degrees F.
Place potatoes in a small pan, cover with water and boil until tender. Drain water.
Remove pie crust from refrigerator to come to room temperature.
Unroll pie crust and place in an ungreased 9-inch tart pan with removable bottom. Press crust firmly against the sides and bottom of the pan. Prick bottom crust with fork.
Arrange the potatoes over bottom of crust. Top evenly with asparagus (broccoli),cheese, onions, and peppers. Save the asparagus tips for top of tart.
In a large mixing bowl, whisk together the eggs, half and half, salt and pepper. Pour evenly over the other ingredients.
Bake until eggs are set and crust is light golden brown, about 25-30 minutes. Remove tart from the oven and let stand 5-10 minutes; remove sides from pan.
Garnish with tomatoes. Cut into wedges and serve warm