In a large cast-iron Dutch oven, pour oil to fill halfway, and heat over medium-high heat until a deep-fry thermometer registers 375°.
In a large bowl, whisk together flour, baking powder, sugar, salt, garlic powder, and onion powder; whisk in 1 cup water, milk, and eggs until smooth.
Cover bottom of a funnel spout with your finger; add 1⁄2 cup batter to funnel. Hold funnel several inches above hot oil, and release batter, moving in a spiral pattern until all batter has emptied funnel. Fry until golden brown, 2 to 3 minutes per side. Let drain on paper towels. Repeat procedure with remaining batter. (Scrape funnel clean as needed between batches.) Serve with Nacho Cheese Sauce, onion, jalapeño, and tomato.
Notes
Kitchen Tip: If funnel cake batter is too thick to steadily flow out of funnel, whisk in water, 1 teaspoon at a time, to thin.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/nacho-funnel-cakes/