INGREDIENTS
3 tbsp
vegetable oil, divided
2 1/2 tsp
chili powder, divided
1 tsp
chipotle chili powder
salt and pepper
1 pint
cherry or grape tomatoes, halved
1
large red onion, cut into ½-inch wedges
1/2
spaghetti squash, seeded
1 15 ounce can
black beans, drained and rinsed
8
tostada shells
1/2 cup
sour cream
fresh cilantro
lime wedges