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Roasted Tomatoes and Pumpkin Seed Pesto Tacos

From the book Tacos by
Prep Time 1 hour
Yield 8 Tacos


This recipe is really all about the tomatoes. For the best results, make these tacos in summer, when tomatoes are at their sweetest and seasonal best. Thicker-fleshed varieties, like Romas, work better for this filling, as they give off less juice and cook down to a firmer consistency. After roasting, the tomato slices turn soft and crinkly.

Thin shavings of buttery, piquant Spanish Manchego cheese make a wonderful addition, as do leaves of peppery arugula or sprigs of cilantro. Pumpkin seeds are available toasted, which deepens their flavor, or you can easily toast them yourself in a hot, dry skillet.

These tacos can easily be served in place of a salad course for a dinner party. The pesto will hold for one week in the refrigerator and shines with pastas, seafood, or meat dishes. For a quick version, substitute about four ounces purchased roasted tomatoes, stocked at specialty markets. Look for them in bulk where olives are sold, packed with herbs and a bit of oil.


1 lb. small Roma tomatoes, cored
2 tsp. kosher salt
½ tsp. sugar
6 poblano chiles, oil-roasted, peeled, cored, and seeded
¾ cup pumpkin seeds, lightly toasted
¾ tsp. green chile powder
2 tsp. lemon-infused olive oil
1 Tbsp. fresh lime juice
1 cup loosely packed, coarsely chopped fresh cilantro leaves
8 (5½-inch) soft yellow corn tortillas
~ Chopped fresh basil or mint leaves, for garnish


  1. Preheat the oven to 200 degrees. Line a baking sheet with parchment paper.
  2. Halve the tomatoes across their midsections and gently squeeze the halves to release seeds and excess juice (the tomatoes will cook faster). Slice the tomatoes thinly. In a bowl, toss the slices with ½ teaspoon of the salt and the sugar. Spread the slices in a single layer (so the tomatoes are evenly exposed to the heat) on the prepared baking sheet. Roast for at least 2 hours, or until the tomatoes are about three-fourths dehydrated and the flesh is the consistency of a roasted bell pepper (they’ll resemble soft sundried tomatoes). The slices will shrink by about half during roasting; no need to turn them. Remove from the oven and set aside to cool down to room temperature.
  3. Cut the prepared poblano chiles into ¼-inch-thick strips and set aside.
  4. In the work bowl of a food processor fitted with the metal blade, combine the pumpkin seeds, chile powder, olive oil, lime juice, cilantro, and remaining 1½ teaspoons salt. Process to the consistency of ground almond butter (a little rougher than peanut butter) or as you prefer.
  5. To serve, lay the tortillas side by side, open face and overlapping on a platter. Divide the pesto equally between the tortillas and top with roasted tomato slices, chile strips, salsa, and basil. Grab, fold, and eat right away. Or build your own taco: lay a tortilla, open face, in one hand. Spoon on some pesto, top with tomato slices, chile strips, salsa, and basil, and eat right away.
75 Authentic and Inspired Recipes

This content is from the book Tacos by Mark Miller.

There are 3 comments on this item
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33% recommend this recipe
1. by Jenny on May 4, 2009 at 5:41 PM PDT

Maybe it is because I haven’t had a taco in a really long time or maybe because I am craving tomatoes or maybe it was seeing the words poblano chiles and lemon-infused olive oil in the same breath that is making me lose mine.

2. by dgreenwood on May 6, 2009 at 11:42 AM PDT

Ooooh - this looks so good! I have slow roasted tomatoes in my freezer from last fall - if you stock these you could make this dish in the dead of winter and have a mini culinary vacation! What a grand thought...

3. by Rinku Bhattacharya on May 7, 2009 at 9:12 AM PDT

The pumpkin seed pesto os soooo good. I have some pumpkin seeds sitting in my refrigerator. I have make something with it.

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