Heat the olive oil in a medium saucepan over medium-high heat.
Add the chopped onion and grated garlic, cooking until fragrant and tender, about 3 minutes.
Stir in the tomato sauce, pumpkin purée, dried basil, liquid smoke, sea salt, black pepper, and chili powder.
Lower the heat and let the sauce simmer, covered, for 10 minutes, stirring occasionally.
Serve warm over your favorite pasta or use as a dip for bread.
Notes / Tips / Wine Advice:
Serving Tip:Toss with al dente pasta, top with fresh basil, and sprinkle with nutritional yeast or Parmesan for extra depth.Wine Advice:Pairs well with a medium-bodied Chianti or a smoky Tempranillo.