Saucy Beans and Artichoke Hearts With Feta

Name: Saucy Beans and Artichoke Hearts With Feta
Ingredients: 1/2 cup plus 1 Tbsp. extra-virgin olive oil, plus more for drizzling; 1 large onion, finely chopped; 2 large tomatoes, grated on the large holes of a box grater; 4 garlic cloves, finely grated; 1 Tbsp. tomato paste; 1 tsp. finely chopped fresh oregano (or 1 Tbsp. dried), plus more for serving; 1/2 tsp. crushed red pepper flakes, plus more for serving; Kosher salt; 2 (14-oz.) cans artichoke hearts, drained, halved lengthwise; 3 (14-oz.) cans lima or other large white beans, drained, rinsed, or 4 cups homemade beans, drained; 1½ cups crumbled feta (about 8 oz.)