WASHINGTON — The House on Thursday narrowly approved an unusual two-option budget plan for 1993 that includes proposals to double the defense spending cuts proposed by President Bush and to funnel as much as $12 billion into domestic programs next year.

In separate votes, the House first approved "Plan A" on a 215-201 roll call. The $1.5-trillion measure proposes that most of the savings from huge defense spending cuts be diverted to social programs, but only if the House agrees next week to modify the 1990 budget agreement that prevents such a shift.

If the House refuses to change the budget agreement--or if President Bush successfully vetoes the attempt--the budget contains a "Plan B" that would earmark the proposed defense savings for deficit reduction.

That plan, considered less controversial, was approved by a vote of 224 to 191.

Although votes could be changed before next week's showdown on revising the 1990 budget deal, the roll call on Plan A indicates that the revision is likely to be approved by a similar margin.

The budget resolution now will be sent to the Senate, where a separate blueprint will be approved and reconciled with the House version. The resulting plan will provide Congress with its spending priorities this year. Bush cannot veto budget resolutions.

Under Plan A and Plan B, however, the defense budget would be reduced by $15 billion in future years and $10 billion during the fiscal year that begins in October. Both Democratic plans would authorize $287.2 billion for the Pentagon.

Bush proposed to trim military spending by about half as much, to $292.2 billion in the coming fiscal year. His budget, however, was rejected by an overwhelming, 370-42 vote Wednesday, with only one of every four House Republicans supporting his proposal.

The House also rejected, 342 to 77, an alternative budget supported by the Congressional Black Caucus and the newly formed Progressive Caucus that would have cut defense outlays by $49.4 billion in the next fiscal year, with the money used to expand social programs.

The Democrat's two-plan proposal, which drew only a handful of Republican votes, was attacked by Rep. Bill Gradison (R-Ohio), ranking GOP member of the House Budget Committee, because it refused to recommend a single spending plan.

"This two-headed hydra lets Democrats have it both ways," Gradison complained.

House Majority Leader Richard A. Gephardt (D-Mo.), wrapping up the daylong debate, disagreed.