01 -
Cut yellow squash lengthwise and into 2-inch pieces. Steam in a steamer basket or boil until tender, about 12-15 minutes. Drain well and mash with a fork until smooth. Let cool slightly.
02 -
In a large bowl, whisk together cornmeal, flour, sugar, half the salt, black pepper, and cayenne if using. Make sure everything is evenly blended.
03 -
In another bowl, mix the mashed squash, minced onion, jalapeño, buttermilk, and beaten egg. Fold this wet mixture into the dry ingredients. Stir gently until just combined - don't overmix. The batter should be thick and slightly lumpy.
04 -
Pour vegetable oil into a cast-iron skillet or Dutch oven about 1 inch deep. Heat over medium-high heat until it reaches 350°F. Test by dropping a small bit of batter in - if it sizzles and floats, you're ready.
05 -
Drop rounded tablespoons of batter into hot oil, working in batches to avoid crowding. Fry for about 3 minutes per side until golden brown and crispy. Use a slotted spoon to flip them halfway through. Remove and drain on paper towels.
06 -
While still hot, sprinkle with remaining salt. Serve warm with your favorite dipping sauces like ranch, honey mustard, or hot sauce.