Spanish Potato Omelet
["1/4 c. olive oil", "1/4 c. vegetable oil", "1 lb. thin skinned red or white potatoes, cut into 1/8-inch slices", "1/2 tsp. salt, divided", "1 small onion, cut in half lengthwise, thinly sliced crosswise", "1/4 c. chopped green bell pepper", "1/4 c. chopped red bell pepper", "3 eggs"]
["Heat oils in a large skillet over medium-high heat.", "Add potatoes to hot oil. Turn with spatula several times to coat all slices with oil."]
["olive oil", "vegetable oil", "thin skinned red", "salt", "onion", "green bell pepper", "red bell pepper", "eggs"]