Tauri is exactly that "Electron like thing" without all the JS and Chromium stuff. Tauri takes the output from an HTML, CSS and JS UI and builds a lightweight Rust app from it. In fact, Tauri was created because the authors were frustrated with Electron's bloat.
I'm currently working a project that will use Svelte for the UI on top of a Rust back end/business logic server. If Tauri gets to a usable WASM bundler before my project is complete there could next to no JS in my app, and freedom from the constant JS vulnerability/update mess.
A big reason for my excitement over Svelte and Tauri is the significant investment I have in HTML, CSS, JS and related tooling does not map to existing RUST front end frameworks using html! macro, etc.
Tauri is still quite young, but it is usable now and even has a "WASM Bundler" on the roadmap for Q3 2020.