Zucchini Cornbread

Name: Zucchini Cornbread
Prep time: 30 min
Cook time: 40 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 2 tbsp butter; 1 medium onion (5-6 oz, thinly sliced); 2 cloves garlic (minced); 1 jalapeño (thinly sliced, optional); 2 medium zucchini (1 lb,, 475 g, thinly sliced); 1 tsp salt; 1/2 tsp pepper; 1 tsp ground cumin; 1 tsp chili powder; 1 tsp paprika; 1/2 cup butter (melted); 1/2 cup granulated sugar; 1 large egg; 1/2 cup milk (see notes below); 1 cup all purpose flour; 1 cup cornmeal (see notes below); 2 tsp baking powder