Quick answer: Munich Airport has around 46 restaurants and cafés, ranging from quick Bavarian bites to the Käfer group's sit-down dining rooms.
Bavarian and international dining
Sportalm — an Alpine-themed restaurant with ski-lift-gondola seating, serving traditional Bavarian dishes alongside pasta and salads
Käfer Bistro — Bavarian and international dishes in a relaxed, old-Paris-bistro-style setting
Käfer (fine dining) — gourmet cuisine mixing classics like Wiener schnitzel and beef tartare with seasonal specialties
Käfer Genusswerkstatt ('factory of enjoyment') — regional and international specialties, including locally roasted coffee
With dozens of cafés and quick-service options besides these sit-down spots, there's a reasonable range whether you have 10 minutes or a couple of hours.
