1. Stir both oils in a small bowl until blended. Line a baking sheet with parchment, then drizzle with 2 tablespoons oil mixture and tilt to coat entire bottom of baking sheet.
2. Knead dough balls together briefly to make one large, smooth ball (coat hands lightly with oil if dough is sticky). Place dough ball on prepared baking sheet and roll to coat in oil, then form into a disk. Cover with plastic wrap and set in a warm spot until doubled in size, 1 1/2 to 2 hours.
3. Gently stretch dough into an oval shape that covers nearly the entire baking sheet. (If dough is too stiff to stretch or shrinks back, cover and let rest until it stretches easily, 10 to 15 minutes.) Without pressing all the way through, use fingertips to dimple dough all over. Cover and let rise 30 more minutes. Meanwhile, heat oven to 450 degrees with a rack in lowest position.
4. Once dough has risen, decorate surface with prepped vegetables and herbs, avoiding overlapping pieces too much. Drizzle remaining 6 tablespoons oil mixture over top, then sprinkle evenly with salt and seeds (if using).
5. Bake focaccia until puffy and golden, 25 to 30 minutes, rotating baking sheet halfway through. Let cool 10 minutes on baking sheet, then carefully slide focaccia onto a cutting board and slice. Serve warm.
Source: Hannaford fresh Magazine, March-April 2023