3 upside onion tart Recipes

butter, thyme, strip the leaves from the stems, onion , sliced somewhat thickly (a tad more than 1/4 inch thick), waxy red potatoes, washed and very thinly sliced, olive oil, grated gruyere cheese, crumbled feta cheese, grated mozzarella cheese, sea salt and black pepper

all-purpose flour, salt, cold butter, cut into chunks, vegetable shortening, gold or red beets (or use some of both colors; see notes), baby or baby-cut carrots (each 3 to 4 in . long and no thicker than 3/4 in.), turnips, cipollini onions (each 1 1/2 in. wide) or red or white boiling onions, garlic (each 3/4 in. wide ), olive oil, vegetable or fat-skimmed chicken broth, white or dark balsamic vinegar, chopped fresh rosemary and sage leaves, or 1/2 tsp each dried rosemary and sage, sugar, pepper, fresh rosemary or sage sprigs, rinsed, or chopped fresh herbs (optional), sour cream or creme fraiche