Filling: In a nonstick skillet or sauté pan, heat canola or vegetable oil over medium heat. When hot, add onion and garlic and sauté for 2 to 3 minutes.
Add thawed, shelled edamame and cook for about 5 minutes.
Add the corn, zucchini, roasted red bell pepper, salt, pepper, oregano, parsley, chili powder and cumin. Sauté (about another 5 minutes, until zucchini is tender and flavors have blended.) Adjust salt, chili powder and cumin to taste. Remove from heat and let cool.
Makes about 2 cups of filling, enough for about 2 dozen tamales.
Meanwhile, make masa according to package directions, using vegetable shortening in place of lard.
To assemble: Hold a soaked, pliable corn husk in one hand, ridge side down. Spread (about 2 Tbsp of masa dough over 1/3 of the smooth side of the husk, but not to edges. Fill with (about 1 Tbsp of filling down the middle of the masa. Fold the husk together lengthwise so the masa covers the filling, then fold the bottom (narrow side) of the husk up, and roll the remainder like a burrito.
Leave the wide edge (top) open. You will have what looks like a small burrito with one end exposed. Stand the tamales on end, sealed end down, in a deep pot with a steamer basket (a pasta cooker with a lift-out insert works well). Cover and steam for about 90 minutes, or until masa is cooked through.
Servings: